diff --git a/Library/Homebrew/cask/lib/hbc/cli/abstract_command.rb b/Library/Homebrew/cask/lib/hbc/cli/abstract_command.rb
index 7470e36dbf..cdb7f5ec83 100644
--- a/Library/Homebrew/cask/lib/hbc/cli/abstract_command.rb
+++ b/Library/Homebrew/cask/lib/hbc/cli/abstract_command.rb
@@ -15,7 +15,7 @@ module Hbc
       end
 
       def self.abstract?
-        name.split("::").last =~ /^Abstract[^a-z]/
+        name.split("::").last.match?(/^Abstract[^a-z]/)
       end
 
       def self.visible