lib/clamp/truthy.rb in clamp-1.0.1 vs lib/clamp/truthy.rb in clamp-1.1.0

@@ -1,7 +1,7 @@
 module Clamp
 
-  TRUTHY_VALUES = %w(1 yes enable on true)
+  TRUTHY_VALUES = %w(1 yes enable on true).freeze
 
   def self.truthy?(arg)
     TRUTHY_VALUES.include?(arg.to_s.downcase)
   end