Fixed a call to .using() that didn't make it into one of the model-validation branch merges.
Fixed a call to .using() that didn't make it into one of the model-validation branch merges.

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@12106 bcc190cf-cafb-0310-a4f2-bffc1f526a37

t11e/django,t11e/django,t11e/django