diff --git a/lib/rubicure/girl.rb b/lib/rubicure/girl.rb
index d1c1089..78bf9cb 100644
--- a/lib/rubicure/girl.rb
+++ b/lib/rubicure/girl.rb
@@ -244,7 +244,7 @@ def colors
     private
 
       def has_transform_style?(style)
-        return false unless respond_to?(:transform_styles)
+        return false unless has_key?(:transform_styles)
 
         transform_styles.keys.map(&:to_sym).include?(style.to_sym)
       end