diff --git a/db/migrate/20150408231524_add_settings_to_comments.rb b/db/migrate/20150408231524_add_settings_to_comments.rb
index 9342ec0..1e44e1f 100644
--- a/db/migrate/20150408231524_add_settings_to_comments.rb
+++ b/db/migrate/20150408231524_add_settings_to_comments.rb
@@ -1,5 +1,9 @@
 class AddSettingsToComments < ActiveRecord::Migration
-  def change
-    rename_column :comments, :setting, :settings
+  def self.up
+    add_column :comments, :setting, :text unless column_exists?(:comments, :setting)
+  end
+
+  def self.down
+    remove_column :comments, :setting
   end
 end
--
libgit2 0.21.2