diff --git a/plstackapi/core/models/site.py b/plstackapi/core/models/site.py
index 67257af..1e1cbe4 100644
--- a/plstackapi/core/models/site.py
+++ b/plstackapi/core/models/site.py
@@ -49,7 +49,7 @@
 
 class SitePrivilege(PlCoreBase):
 
-    user = models.ForeignKey('User', related_name='site_privileges')
+    user = models.ForeignKey('PLUser', related_name='site_privileges')
     site = models.ForeignKey('Site', related_name='site_privileges')
     role = models.ForeignKey('Role')