diff --git a/Library/Homebrew/extend/os/mac/hardware/cpu.rb b/Library/Homebrew/extend/os/mac/hardware/cpu.rb
index 746786f98d..7b10da535a 100644
--- a/Library/Homebrew/extend/os/mac/hardware/cpu.rb
+++ b/Library/Homebrew/extend/os/mac/hardware/cpu.rb
@@ -116,7 +116,7 @@ module Hardware
         sysctl_bool("hw.optional.sse4_2")
       end
 
-      # Note: this is more reliable than checking uname.
+      # NOTE: this is more reliable than checking uname.
       # `sysctl` returns the right answer even when running in Rosetta 2.
       def physical_cpu_arm64?
         sysctl_bool("hw.optional.arm64")
diff --git a/Library/Homebrew/extend/os/mac/keg_relocate.rb b/Library/Homebrew/extend/os/mac/keg_relocate.rb
index 896bc69c85..eae8373747 100644
--- a/Library/Homebrew/extend/os/mac/keg_relocate.rb
+++ b/Library/Homebrew/extend/os/mac/keg_relocate.rb
@@ -77,7 +77,7 @@ class Keg
         # remove all RPATHs from the file.
         if ENV["HOMEBREW_RELOCATE_METAVARS"] &&
            file.dynamically_linked_libraries.none? { |lib| lib.start_with?("@rpath") }
-          # Note: This could probably be made more efficient by reverse-sorting
+          # NOTE: This could probably be made more efficient by reverse-sorting
           # the RPATHs by offset and calling MachOFile#delete_command
           # with repopulate: false.
           file.rpaths.each { |r| file.delete_rpath(r) }
diff --git a/Library/Homebrew/test/utils/shell_spec.rb b/Library/Homebrew/test/utils/shell_spec.rb
index 61c24e745f..3db721c63f 100644
--- a/Library/Homebrew/test/utils/shell_spec.rb
+++ b/Library/Homebrew/test/utils/shell_spec.rb
@@ -73,7 +73,7 @@ describe Utils::Shell do
   specify "::csh_quote" do
     expect(subject.send(:csh_quote, "")).to eq("''")
     expect(subject.send(:csh_quote, "\\")).to eq("\\\\")
-    # note this test is different than for sh
+    # NOTE: this test is different than for sh
     expect(subject.send(:csh_quote, "\n")).to eq("'\\\n'")
     expect(subject.send(:csh_quote, "$")).to eq("\\$")
     expect(subject.send(:csh_quote, "word")).to eq("word")