diff --git a/db/migrate/20110911213207_counter_cache_on_post_comments.rb.rb b/db/migrate/20110911213207_counter_cache_on_post_comments.rb.rb
index 3e6443fa9..65f6fef00 100644
--- a/db/migrate/20110911213207_counter_cache_on_post_comments.rb.rb
+++ b/db/migrate/20110911213207_counter_cache_on_post_comments.rb.rb
@@ -4,7 +4,7 @@ class CounterCacheOnPostComments < ActiveRecord::Migration
     add_column :posts, :comments_count, :integer, :default => 0
     execute <<SQL if Post.count > 0
       UPDATE posts
-      SET posts.comments_count = (SELECT COUNT(*) FROM comments WHERE comments.post_id = posts.id)
+      SET comments_count = (SELECT COUNT(*) FROM comments WHERE comments.post_id = posts.id)
 SQL
   end