diff --git a/actionpack/test/fixtures/topic.rb b/actionpack/test/fixtures/topic.rb
index 0929de7e08..0beeecf28d 100644
--- a/actionpack/test/fixtures/topic.rb
+++ b/actionpack/test/fixtures/topic.rb
@@ -1,3 +1,3 @@
 class Topic < ActiveRecord::Base
-  has_many :replies, :include => [:user], :dependent => true
-end
\ No newline at end of file
+  has_many :replies, :include => [:user], :dependent => :destroy
+end