diff --git a/lib/bitmask_attributes/definition.rb b/lib/bitmask_attributes/definition.rb
index cb93097..aa7cc50 100644
--- a/lib/bitmask_attributes/definition.rb
+++ b/lib/bitmask_attributes/definition.rb
@@ -65,7 +65,7 @@ def #{attribute}=(raw_value)
       def create_attribute_methods_on(model)
         model.class_eval %(
           def self.values_for_#{attribute}      # def self.values_for_numbers
-            #{values}                           #   [:one, :two, :three]
+            #{values.inspect}                   #   [:one, :two, :three]
           end                                   # end
         )
       end