diff --git a/Library/Homebrew/cask/lib/hbc/audit.rb b/Library/Homebrew/cask/lib/hbc/audit.rb
index 0cb4703701..ab2f1bce54 100644
--- a/Library/Homebrew/cask/lib/hbc/audit.rb
+++ b/Library/Homebrew/cask/lib/hbc/audit.rb
@@ -47,7 +47,7 @@ module Hbc
 
     def check_required_stanzas
       odebug "Auditing required stanzas"
-      %i{version sha256 url homepage}.each do |sym|
+      [:version, :sha256, :url, :homepage].each do |sym|
         add_error "a #{sym} stanza is required" unless cask.send(sym)
       end
       add_error "at least one name stanza is required" if cask.name.empty?
diff --git a/Library/Homebrew/cask/lib/hbc/cli/internal_audit_modified_casks.rb b/Library/Homebrew/cask/lib/hbc/cli/internal_audit_modified_casks.rb
index feb5a830a6..d750f5af4d 100644
--- a/Library/Homebrew/cask/lib/hbc/cli/internal_audit_modified_casks.rb
+++ b/Library/Homebrew/cask/lib/hbc/cli/internal_audit_modified_casks.rb
@@ -1,7 +1,7 @@
 module Hbc
   class CLI
     class InternalAuditModifiedCasks < InternalUseBase
-      RELEVANT_STANZAS = %i{version sha256 url appcast}.freeze
+      RELEVANT_STANZAS = [:version, :sha256, :url, :appcast].freeze
 
       class << self
         def needs_init?
diff --git a/Library/Homebrew/cask/lib/hbc/dsl/stanza_proxy.rb b/Library/Homebrew/cask/lib/hbc/dsl/stanza_proxy.rb
index b1a850c5aa..9e6368362e 100644
--- a/Library/Homebrew/cask/lib/hbc/dsl/stanza_proxy.rb
+++ b/Library/Homebrew/cask/lib/hbc/dsl/stanza_proxy.rb
@@ -36,7 +36,7 @@ module Hbc
       end
 
       def respond_to?(method, include_private = false)
-        return true if %i{encode_with proxy? to_s type}.include?(method)
+        return true if [:encode_with, :proxy?, :to_s, :type].include?(method)
         return false if method == :to_ary
         @resolver.call.respond_to?(method, include_private)
       end
diff --git a/Library/Homebrew/cask/spec/cask/dsl/stanza_proxy_spec.rb b/Library/Homebrew/cask/spec/cask/dsl/stanza_proxy_spec.rb
index 8516f0d382..2bb7ae6333 100644
--- a/Library/Homebrew/cask/spec/cask/dsl/stanza_proxy_spec.rb
+++ b/Library/Homebrew/cask/spec/cask/dsl/stanza_proxy_spec.rb
@@ -1,6 +1,6 @@
 describe Hbc::DSL::StanzaProxy do
   let(:stanza_proxy) {
-    described_class.new(Array) { %i{foo bar cake} }
+    described_class.new(Array) { [:foo, :bar, :cake] }
   }
 
   subject { stanza_proxy }