diff --git a/plugin.rb b/plugin.rb
index 47464c9..b3b83d1 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -51,7 +51,7 @@ after_initialize do
         if $1 == ':' # skip casts
           $&
         else
-          names << $1
+          names << $2
           "$#{names.length - 1}"
         end
       end