diff --git a/db/migrate/20130708092905_move_admin_notes_to_comments.rb b/db/migrate/20130708092905_move_admin_notes_to_comments.rb
index 8833359..cca4c8e 100644
--- a/db/migrate/20130708092905_move_admin_notes_to_comments.rb
+++ b/db/migrate/20130708092905_move_admin_notes_to_comments.rb
@@ -10,7 +10,7 @@
 
     # Update all the existing comments to the default namespace
     say "Updating any existing comments to the #{ActiveAdmin.application.default_namespace} namespace."
-    comments_table_name = ActiveRecord::Migrator.proper_table_name("active_admin_comments")
+    comments_table_name = ActiveRecord::Migration.proper_table_name("active_admin_comments")
     execute "UPDATE #{comments_table_name} SET namespace='#{ActiveAdmin.application.default_namespace}'"
   end