diff --git a/Library/Homebrew/brew.sh b/Library/Homebrew/brew.sh
index 59069b3946..7feeac9f23 100644
--- a/Library/Homebrew/brew.sh
+++ b/Library/Homebrew/brew.sh
@@ -382,10 +382,10 @@ else
   curl_name_and_version="${curl_version_output%% (*}"
   if [[ $(numeric "${curl_name_and_version##* }") -lt $(numeric "$HOMEBREW_MINIMUM_CURL_VERSION") ]]
   then
-      message="Please update your system cURL.
+      message="Please update your system curl.
 Minimum required version: ${HOMEBREW_MINIMUM_CURL_VERSION}
-Your cURL version: ${curl_name_and_version##* }
-Your cURL executable: $(type -p $HOMEBREW_CURL)"
+Your curl version: ${curl_name_and_version##* }
+Your curl executable: $(type -p $HOMEBREW_CURL)"
 
     if [[ -z $HOMEBREW_CURL_PATH || -z $HOMEBREW_DEVELOPER ]]; then
       HOMEBREW_SYSTEM_CURL_TOO_OLD=1
diff --git a/Library/Homebrew/build.rb b/Library/Homebrew/build.rb
index cd715d7dac..92a5c99971 100644
--- a/Library/Homebrew/build.rb
+++ b/Library/Homebrew/build.rb
@@ -157,7 +157,7 @@ class Build
           puts "Install to this prefix: #{formula.prefix}"
 
           if args.git?
-            puts "This directory is now a git repo. Make your changes and then use:"
+            puts "This directory is now a Git repo. Make your changes and then use:"
             puts "  git diff | pbcopy"
             puts "to copy the diff to the clipboard."
           end
diff --git a/Library/Homebrew/cask/cmd/internal_stanza.rb b/Library/Homebrew/cask/cmd/internal_stanza.rb
index 3183588b82..e134dd87d0 100644
--- a/Library/Homebrew/cask/cmd/internal_stanza.rb
+++ b/Library/Homebrew/cask/cmd/internal_stanza.rb
@@ -98,7 +98,7 @@ module Cask
           begin
             value = cask.send(stanza)
           rescue
-            opoo "failure calling '#{stanza}' on Cask '#{cask}'" unless args.quiet?
+            opoo "Failure calling '#{stanza}' on Cask '#{cask}'" unless args.quiet?
             puts ""
             next
           end
diff --git a/Library/Homebrew/cask/dsl/caveats.rb b/Library/Homebrew/cask/dsl/caveats.rb
index 17641990c0..55c77cb117 100644
--- a/Library/Homebrew/cask/dsl/caveats.rb
+++ b/Library/Homebrew/cask/dsl/caveats.rb
@@ -84,7 +84,7 @@ module Cask
       caveat :path_environment_variable do |path|
         <<~EOS
           To use #{@cask}, you may need to add the #{path} directory
-          to your PATH environment variable, e.g. (for bash shell):
+          to your PATH environment variable, e.g. (for Bash shell):
             export PATH=#{path}:"$PATH"
         EOS
       end
diff --git a/Library/Homebrew/cask/installer.rb b/Library/Homebrew/cask/installer.rb
index 42dbe44791..bd4cbd6aa9 100644
--- a/Library/Homebrew/cask/installer.rb
+++ b/Library/Homebrew/cask/installer.rb
@@ -356,7 +356,7 @@ module Cask
       missing_formulae_and_casks = missing_cask_and_formula_dependencies
 
       if missing_formulae_and_casks.empty?
-        puts "All Formula dependencies satisfied."
+        puts "All formula dependencies satisfied."
         return
       end
 
diff --git a/Library/Homebrew/cmd/update.sh b/Library/Homebrew/cmd/update.sh
index 415eac59a5..8b1ea9f54b 100644
--- a/Library/Homebrew/cmd/update.sh
+++ b/Library/Homebrew/cmd/update.sh
@@ -370,7 +370,7 @@ EOS
     # we cannot install a Homebrew cURL if homebrew/core is unavailable.
     if [[ ! -d "$HOMEBREW_LIBRARY/Taps/homebrew/homebrew-core" ]] || ! brew install curl
     then
-      odie "Curl must be installed and in your PATH!"
+      odie "'curl' must be installed and in your PATH!"
     fi
   fi
 
@@ -381,7 +381,7 @@ EOS
     # we cannot install a Homebrew Git if homebrew/core is unavailable.
     if [[ ! -d "$HOMEBREW_LIBRARY/Taps/homebrew/homebrew-core" ]] || ! brew install git
     then
-      odie "Git must be installed and in your PATH!"
+      odie "'git' must be installed and in your PATH!"
     fi
   fi
 
diff --git a/Library/Homebrew/dev-cmd/bump-formula-pr.rb b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
index 7e57a7e597..896a57937e 100644
--- a/Library/Homebrew/dev-cmd/bump-formula-pr.rb
+++ b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
@@ -351,7 +351,7 @@ module Homebrew
 
     alias_rename = alias_update_pair(formula, new_formula_version)
     if alias_rename.present?
-      ohai "renaming alias #{alias_rename.first} to #{alias_rename.last}"
+      ohai "Renaming alias #{alias_rename.first} to #{alias_rename.last}"
       alias_rename.map! { |a| formula.tap.alias_dir/a }
     end
 
diff --git a/Library/Homebrew/dev-cmd/create.rb b/Library/Homebrew/dev-cmd/create.rb
index bf6e540e0c..23f9b7bdbc 100644
--- a/Library/Homebrew/dev-cmd/create.rb
+++ b/Library/Homebrew/dev-cmd/create.rb
@@ -145,7 +145,7 @@ module Homebrew
     fc.tap = Tap.fetch(args.tap || "homebrew/core")
     raise TapUnavailableError, args.tap unless fc.tap.installed?
 
-    fc.url = args.named.first # Pull the first (and only) url from ARGV
+    fc.url = args.named.first # Pull the first (and only) URL from ARGV
 
     fc.mode = if args.autotools?
       :autotools
diff --git a/Library/Homebrew/dev-cmd/edit.rb b/Library/Homebrew/dev-cmd/edit.rb
index 60aaacdd62..2a1d137148 100644
--- a/Library/Homebrew/dev-cmd/edit.rb
+++ b/Library/Homebrew/dev-cmd/edit.rb
@@ -44,7 +44,7 @@ module Homebrew
 
       raise UsageError, "#{path} doesn't exist on disk. " \
                         "Run #{Formatter.identifier("brew create --set-name #{path.basename} $URL")} " \
-                        "to create a new Formula!"
+                        "to create a new formula!"
     end.presence
 
     # If no brews are listed, open the project root in an editor.
diff --git a/Library/Homebrew/dev-cmd/unpack.rb b/Library/Homebrew/dev-cmd/unpack.rb
index feecfc80d2..011b87b224 100644
--- a/Library/Homebrew/dev-cmd/unpack.rb
+++ b/Library/Homebrew/dev-cmd/unpack.rb
@@ -68,7 +68,7 @@ module Homebrew
 
       next unless args.git?
 
-      ohai "Setting up git repository"
+      ohai "Setting up Git repository"
       cd stage_dir
       system "git", "init", "-q"
       system "git", "add", "-A"
diff --git a/Library/Homebrew/diagnostic.rb b/Library/Homebrew/diagnostic.rb
index e2828e33a4..60ac07a04a 100644
--- a/Library/Homebrew/diagnostic.rb
+++ b/Library/Homebrew/diagnostic.rb
@@ -715,7 +715,7 @@ module Homebrew
         return if (paths & gnubin).empty?
 
         <<~EOS
-          Putting non-prefixed coreutils in your path can cause gmp builds to fail.
+          Putting non-prefixed coreutils in your path can cause GMP builds to fail.
         EOS
       rescue FormulaUnavailableError
         nil
diff --git a/Library/Homebrew/extend/pathname.rb b/Library/Homebrew/extend/pathname.rb
index dfec348867..3930deb3bc 100644
--- a/Library/Homebrew/extend/pathname.rb
+++ b/Library/Homebrew/extend/pathname.rb
@@ -100,13 +100,13 @@ class Pathname
         src.resource.stage { install(*src.files) }
       when Array
         if src.empty?
-          opoo "tried to install empty array to #{self}"
+          opoo "Tried to install empty array to #{self}"
           break
         end
         src.each { |s| install_p(s, File.basename(s)) }
       when Hash
         if src.empty?
-          opoo "tried to install empty hash to #{self}"
+          opoo "Tried to install empty hash to #{self}"
           break
         end
         src.each { |s, new_basename| install_p(s, new_basename) }
@@ -372,7 +372,7 @@ class Pathname
   def write_exec_script(*targets)
     targets.flatten!
     if targets.empty?
-      opoo "tried to write exec scripts to #{self} for an empty list of targets"
+      opoo "Tried to write exec scripts to #{self} for an empty list of targets"
       return
     end
     mkpath
diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index c719f5fe69..7a5ca81540 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -828,7 +828,7 @@ class Formula
     HOMEBREW_PREFIX/"var"
   end
 
-  # The directory where the formula's ZSH function files should be
+  # The directory where the formula's zsh function files should be
   # installed.
   # This is symlinked into `HOMEBREW_PREFIX` after installation or with
   # `brew link` for formulae that are not keg-only.
@@ -852,7 +852,7 @@ class Formula
     prefix/"etc/bash_completion.d"
   end
 
-  # The directory where the formula's ZSH completion files should be
+  # The directory where the formula's zsh completion files should be
   # installed.
   # This is symlinked into `HOMEBREW_PREFIX` after installation or with
   # `brew link` for formulae that are not keg-only.
@@ -1705,7 +1705,7 @@ class Formula
       deps ||= declared_runtime_dependencies unless undeclared
       deps ||= (declared_runtime_dependencies | undeclared_runtime_dependencies)
     rescue FormulaUnavailableError
-      onoe "could not get runtime dependencies from #{path}!"
+      onoe "Could not get runtime dependencies from #{path}!"
       deps ||= []
     end
     deps
diff --git a/Library/Homebrew/language/go.rb b/Library/Homebrew/language/go.rb
index ecf3465d76..90bd711dd9 100644
--- a/Library/Homebrew/language/go.rb
+++ b/Library/Homebrew/language/go.rb
@@ -15,9 +15,9 @@ module Language
     def self.stage_deps(resources, target)
       if resources.empty?
         if Homebrew::EnvConfig.developer?
-          odie "tried to stage empty Language::Go resources array"
+          odie "Tried to stage empty Language::Go resources array"
         else
-          opoo "tried to stage empty Language::Go resources array"
+          opoo "Tried to stage empty Language::Go resources array"
         end
       end
       resources.grep(Resource::Go) { |resource| resource.stage(target) }
diff --git a/Library/Homebrew/livecheck/livecheck.rb b/Library/Homebrew/livecheck/livecheck.rb
index 2fa2c974dd..83b7a78961 100644
--- a/Library/Homebrew/livecheck/livecheck.rb
+++ b/Library/Homebrew/livecheck/livecheck.rb
@@ -492,7 +492,7 @@ module Homebrew
         end
 
         if livecheck_strategy.present? && livecheck_url.blank?
-          odebug "#{strategy_name} strategy requires a url"
+          odebug "#{strategy_name} strategy requires a URL"
           next
         end
 
diff --git a/Library/Homebrew/rubocops/urls.rb b/Library/Homebrew/rubocops/urls.rb
index 74bf2dd33a..67aa7d29c2 100644
--- a/Library/Homebrew/rubocops/urls.rb
+++ b/Library/Homebrew/rubocops/urls.rb
@@ -293,7 +293,7 @@ module RuboCop
             next if url_has_revision?(parameters(url).last)
 
             offending_node(url)
-            problem "Formulae in homebrew/core should specify a revision for git urls"
+            problem "Formulae in homebrew/core should specify a revision for git URLs"
           end
         end
 
@@ -316,7 +316,7 @@ module RuboCop
             next if url_has_tag?(parameters(url).last)
 
             offending_node(url)
-            problem "Formulae in homebrew/core should specify a tag for git urls"
+            problem "Formulae in homebrew/core should specify a tag for git URLs"
           end
         end
 
diff --git a/Library/Homebrew/sandbox.rb b/Library/Homebrew/sandbox.rb
index 459a5384f1..56486ac9a7 100644
--- a/Library/Homebrew/sandbox.rb
+++ b/Library/Homebrew/sandbox.rb
@@ -127,7 +127,7 @@ class Sandbox
         end
 
         if @failed && Homebrew::EnvConfig.verbose?
-          ohai "Sandbox log", logs
+          ohai "Sandbox Log", logs
           $stdout.flush # without it, brew test-bot would fail to catch the log
         end
       end
diff --git a/Library/Homebrew/tap.rb b/Library/Homebrew/tap.rb
index da6a653fa1..986e35dc13 100644
--- a/Library/Homebrew/tap.rb
+++ b/Library/Homebrew/tap.rb
@@ -209,7 +209,7 @@ class Tap
     return "N/A" unless installed?
 
     pretty_revision = git_short_head
-    return "(no git repository)" unless pretty_revision
+    return "(no Git repository)" unless pretty_revision
 
     "(git revision #{pretty_revision}; last commit #{git_last_commit_date})"
   end
diff --git a/Library/Homebrew/test.rb b/Library/Homebrew/test.rb
index c92cdaf0d2..72f373c8bb 100644
--- a/Library/Homebrew/test.rb
+++ b/Library/Homebrew/test.rb
@@ -26,8 +26,8 @@ begin
   trap("INT", old_trap)
 
   if Homebrew::EnvConfig.developer? || ENV["CI"].present?
-    raise "cannot find child processes without `pgrep`, please install!" unless which("pgrep")
-    raise "cannot kill child processes without `pkill`, please install!" unless which("pkill")
+    raise "Cannot find child processes without `pgrep`, please install!" unless which("pgrep")
+    raise "Cannot kill child processes without `pkill`, please install!" unless which("pkill")
   end
 
   formula = T.must(args.named.to_resolved_formulae.first)
diff --git a/Library/Homebrew/test/bash_spec.rb b/Library/Homebrew/test/bash_spec.rb
index 3a7827c853..178db5777a 100644
--- a/Library/Homebrew/test/bash_spec.rb
+++ b/Library/Homebrew/test/bash_spec.rb
@@ -25,7 +25,7 @@ describe "Bash" do
   end
 
   context "every `.sh` file" do
-    it "has valid bash syntax" do
+    it "has valid Bash syntax" do
       Pathname.glob("#{HOMEBREW_LIBRARY_PATH}/**/*.sh").each do |path|
         relative_path = path.relative_path_from(HOMEBREW_LIBRARY_PATH)
         next if relative_path.to_s.start_with?("shims/", "test/", "vendor/")
@@ -42,7 +42,7 @@ describe "Bash" do
   end
 
   context "every shim script" do
-    it "has valid bash syntax" do
+    it "has valid Bash syntax" do
       # These have no file extension, but can be identified by their shebang.
       (HOMEBREW_LIBRARY_PATH/"shims").find do |path|
         next if path.directory?
diff --git a/Library/Homebrew/test/cask/cask_spec.rb b/Library/Homebrew/test/cask/cask_spec.rb
index 6badf576a7..2072dff887 100644
--- a/Library/Homebrew/test/cask/cask_spec.rb
+++ b/Library/Homebrew/test/cask/cask_spec.rb
@@ -41,13 +41,13 @@ describe Cask::Cask, :cask do
       expect(c.token).to eq("local-caffeine")
     end
 
-    it "returns an instance of the Cask from a url" do
+    it "returns an instance of the Cask from a URL" do
       c = Cask::CaskLoader.load("file://#{tap_path}/Casks/local-caffeine.rb")
       expect(c).to be_kind_of(described_class)
       expect(c.token).to eq("local-caffeine")
     end
 
-    it "raises an error when failing to download a Cask from a url" do
+    it "raises an error when failing to download a Cask from a URL" do
       expect {
         url = "file://#{tap_path}/Casks/notacask.rb"
 
diff --git a/Library/Homebrew/test/cask/cmd/info_spec.rb b/Library/Homebrew/test/cask/cmd/info_spec.rb
index 8839c5b8b4..00481ced43 100644
--- a/Library/Homebrew/test/cask/cmd/info_spec.rb
+++ b/Library/Homebrew/test/cask/cmd/info_spec.rb
@@ -98,7 +98,7 @@ describe Cask::Cmd::Info, :cask do
 
       Custom text via puts followed by DSL-generated text:
       To use with-caveats, you may need to add the /custom/path/bin directory
-      to your PATH environment variable, e.g. (for bash shell):
+      to your PATH environment variable, e.g. (for Bash shell):
         export PATH=/custom/path/bin:"$PATH"
 
     EOS
diff --git a/Library/Homebrew/test/caveats_spec.rb b/Library/Homebrew/test/caveats_spec.rb
index 8cc954869c..922dc4a930 100644
--- a/Library/Homebrew/test/caveats_spec.rb
+++ b/Library/Homebrew/test/caveats_spec.rb
@@ -192,7 +192,7 @@ describe Caveats do
         allow(Utils::Shell).to receive(:parent).and_return(nil)
       end
 
-      it "gives dir where bash completions have been installed" do
+      it "gives dir where Bash completions have been installed" do
         (path/"etc/bash_completion.d").mkpath
         expect(caveats).to include(HOMEBREW_PREFIX/"etc/bash_completion.d")
       end
diff --git a/Library/Homebrew/test/download_strategies_spec.rb b/Library/Homebrew/test/download_strategies_spec.rb
index 120294835a..0a59c06e03 100644
--- a/Library/Homebrew/test/download_strategies_spec.rb
+++ b/Library/Homebrew/test/download_strategies_spec.rb
@@ -419,7 +419,7 @@ describe DownloadStrategyDetector do
       it { is_expected.to eq(GitHubGitDownloadStrategy) }
     end
 
-    it "defaults to cURL" do
+    it "defaults to curl" do
       expect(subject).to eq(CurlDownloadStrategy)
     end
 
diff --git a/Library/Homebrew/test/rubocops/cask/homepage_url_trailing_slash_spec.rb b/Library/Homebrew/test/rubocops/cask/homepage_url_trailing_slash_spec.rb
index 05d98bec5a..148c6a6077 100644
--- a/Library/Homebrew/test/rubocops/cask/homepage_url_trailing_slash_spec.rb
+++ b/Library/Homebrew/test/rubocops/cask/homepage_url_trailing_slash_spec.rb
@@ -9,7 +9,7 @@ describe RuboCop::Cop::Cask::HomepageUrlTrailingSlash do
 
   subject(:cop) { described_class.new }
 
-  context "when the homepage url ends with a slash" do
+  context "when the homepage URL ends with a slash" do
     let(:source) do
       <<-CASK.undent
         cask 'foo' do
@@ -21,7 +21,7 @@ describe RuboCop::Cop::Cask::HomepageUrlTrailingSlash do
     include_examples "does not report any offenses"
   end
 
-  context "when the homepage url does not end with a slash but has a path" do
+  context "when the homepage URL does not end with a slash but has a path" do
     let(:source) do
       <<-CASK.undent
         cask 'foo' do
@@ -33,7 +33,7 @@ describe RuboCop::Cop::Cask::HomepageUrlTrailingSlash do
     include_examples "does not report any offenses"
   end
 
-  context "when the homepage url does not end with a slash and has no path" do
+  context "when the homepage URL does not end with a slash and has no path" do
     let(:source) do
       <<-CASK.undent
         cask 'foo' do
diff --git a/Library/Homebrew/test/rubocops/urls_spec.rb b/Library/Homebrew/test/rubocops/urls_spec.rb
index 39da4b50be..0e5dc29a10 100644
--- a/Library/Homebrew/test/rubocops/urls_spec.rb
+++ b/Library/Homebrew/test/rubocops/urls_spec.rb
@@ -280,7 +280,7 @@ describe RuboCop::Cop::FormulaAudit::GitUrls do
   subject(:cop) { described_class.new }
 
   context "when a git URL is used" do
-    it "reports no offenses with a non-git url" do
+    it "reports no offenses with a non-git URL" do
       expect_no_offenses(<<~RUBY, "/homebrew-core/")
         class Foo < Formula
           desc "foo"
@@ -329,7 +329,7 @@ describe RuboCop::Cop::FormulaAudit::GitUrls do
         class Foo < Formula
           desc "foo"
           url "https://github.com/foo/bar.git",
-          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Formulae in homebrew/core should specify a revision for git urls
+          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Formulae in homebrew/core should specify a revision for git URLs
               tag: "v1.0.0"
         end
       RUBY
@@ -340,7 +340,7 @@ describe RuboCop::Cop::FormulaAudit::GitUrls do
         class Foo < Formula
           desc "foo"
           url "https://github.com/foo/bar.git",
-          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Formulae in homebrew/core should specify a revision for git urls
+          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Formulae in homebrew/core should specify a revision for git URLs
               shallow: false,
               tag:     "v1.0.0"
         end
@@ -435,7 +435,7 @@ describe RuboCop::Cop::FormulaAuditStrict::GitUrls do
         class Foo < Formula
           desc "foo"
           url "https://github.com/foo/bar.git",
-          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Formulae in homebrew/core should specify a tag for git urls
+          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Formulae in homebrew/core should specify a tag for git URLs
               revision: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
         end
       RUBY
@@ -446,7 +446,7 @@ describe RuboCop::Cop::FormulaAuditStrict::GitUrls do
         class Foo < Formula
           desc "foo"
           url "https://github.com/foo/bar.git",
-          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Formulae in homebrew/core should specify a tag for git urls
+          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Formulae in homebrew/core should specify a tag for git URLs
               revision: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
               shallow:  false
         end
diff --git a/Library/Homebrew/test/support/fixtures/failball.rb b/Library/Homebrew/test/support/fixtures/failball.rb
index e4a15344b3..1b396a721e 100644
--- a/Library/Homebrew/test/support/fixtures/failball.rb
+++ b/Library/Homebrew/test/support/fixtures/failball.rb
@@ -19,6 +19,6 @@ class Failball < Formula
     system "/usr/bin/false" if ENV["FAILBALL_BUILD_ERROR"]
 
     # This should get marshalled into a RuntimeError.
-    raise "something that isn't a build error happened!"
+    raise "Something that isn't a build error happened!"
   end
 end
diff --git a/Library/Homebrew/test/utils/shell_spec.rb b/Library/Homebrew/test/utils/shell_spec.rb
index 0e32d29361..8edc84c50b 100644
--- a/Library/Homebrew/test/utils/shell_spec.rb
+++ b/Library/Homebrew/test/utils/shell_spec.rb
@@ -82,7 +82,7 @@ describe Utils::Shell do
   describe "::prepend_path_in_profile" do
     let(:path) { "/my/path" }
 
-    it "supports Tcsh" do
+    it "supports tcsh" do
       ENV["SHELL"] = "/bin/tcsh"
       expect(described_class.prepend_path_in_profile(path))
         .to eq("echo 'setenv PATH #{path}:$PATH' >> #{shell_profile}")
@@ -94,7 +94,7 @@ describe Utils::Shell do
         .to eq("echo 'export PATH=\"#{path}:$PATH\"' >> #{shell_profile}")
     end
 
-    it "supports Fish" do
+    it "supports fish" do
       ENV["SHELL"] = "/usr/local/bin/fish"
       ENV["fish_user_paths"] = "/some/path"
       expect(described_class.prepend_path_in_profile(path))
diff --git a/Library/Homebrew/utils/curl.rb b/Library/Homebrew/utils/curl.rb
index ef26b1fabb..f8c34158e2 100644
--- a/Library/Homebrew/utils/curl.rb
+++ b/Library/Homebrew/utils/curl.rb
@@ -16,7 +16,7 @@ module Utils
         which("curl"),
         "/usr/bin/curl",
       ].compact.map { |c| Pathname(c) }.find(&:executable?)
-      raise "no executable curl was found" unless @curl
+      raise "No executable curl was found" unless @curl
 
       @curl
     end
diff --git a/Library/Homebrew/utils/pypi.rb b/Library/Homebrew/utils/pypi.rb
index 0b6e3090ee..7408ac9988 100644
--- a/Library/Homebrew/utils/pypi.rb
+++ b/Library/Homebrew/utils/pypi.rb
@@ -32,7 +32,7 @@ module PyPI
         match = if package_string.start_with?(PYTHONHOSTED_URL_PREFIX)
           File.basename(package_string).match(/^(.+)-([a-z\d.]+?)(?:.tar.gz|.zip)$/)
         end
-        raise ArgumentError, "package should be a valid PyPI url" if match.blank?
+        raise ArgumentError, "package should be a valid PyPI URL" if match.blank?
 
         @name = match[1]
         @version = match[2]