diff --git a/actionpack/lib/action_view/helpers/form_options_helper.rb b/actionpack/lib/action_view/helpers/form_options_helper.rb
index 794132637c..6513edcf6e 100644
--- a/actionpack/lib/action_view/helpers/form_options_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_options_helper.rb
@@ -427,7 +427,7 @@ module ActionView
       #
       # Sample usage (Hash):
       #   grouped_options = {
-      #    'North America' => [['United States','US], 'Canada'],
+      #    'North America' => [['United States','US'], 'Canada'],
       #    'Europe' => ['Denmark','Germany','France']
       #   }
       #   grouped_options_for_select(grouped_options)