diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb
index 6a28d7b1550cc89abf3e19714f7a62cb099e172c..6f464d6ad026aba13c70ff96f1f824c8f1e4c106 100644
--- a/activerecord/lib/active_record/relation/query_methods.rb
+++ b/activerecord/lib/active_record/relation/query_methods.rb
@@ -216,11 +216,11 @@ def lock(locks = true)
     #
     #   def visible_posts
     #     case role
-    #     if 'Country Manager'
+    #     when 'Country Manager'
     #       Post.where(:country => country)
-    #     if 'Reviewer'
+    #     when 'Reviewer'
     #       Post.published
-    #     if 'Bad User'
+    #     when 'Bad User'
     #       Post.none # => returning [] instead breaks the previous code
     #     end
     #   end