diff --git a/Library/Homebrew/cask/audit.rb b/Library/Homebrew/cask/audit.rb
index 7ca23d7150..2b3429f5dd 100644
--- a/Library/Homebrew/cask/audit.rb
+++ b/Library/Homebrew/cask/audit.rb
@@ -307,7 +307,7 @@ module Cask
     def check_appcast_contains_version
       return unless appcast?
       return if cask.appcast.to_s.empty?
-      return if cask.appcast.configuration == :no_check
+      return if cask.appcast.must_contain == :no_check
 
       appcast_stanza = cask.appcast.to_s
       appcast_contents, = curl_output("--compressed", "--user-agent", HOMEBREW_USER_AGENT_FAKE_SAFARI, "--location",
@@ -316,7 +316,7 @@ module Cask
       adjusted_version_stanza = if cask.appcast.configuration.blank?
         version_stanza.match(/^[[:alnum:].]+/)[0]
       else
-        cask.appcast.configuration
+        cask.appcast.must_contain
       end
       return if appcast_contents.include? adjusted_version_stanza
 
diff --git a/Library/Homebrew/cask/dsl/appcast.rb b/Library/Homebrew/cask/dsl/appcast.rb
index 695152dec3..99821e6ddd 100644
--- a/Library/Homebrew/cask/dsl/appcast.rb
+++ b/Library/Homebrew/cask/dsl/appcast.rb
@@ -3,12 +3,12 @@
 module Cask
   class DSL
     class Appcast
-      attr_reader :uri, :parameters, :configuration
+      attr_reader :uri, :parameters, :must_contain
 
       def initialize(uri, **parameters)
         @uri        = URI(uri)
         @parameters = parameters
-        @configuration = parameters[:configuration] if parameters.key?(:configuration)
+        @must_contain = parameters[:must_contain] if parameters.key?(:must_contain)
       end
 
       def to_yaml