diff --git a/modules/user/user.module b/modules/user/user.module
index 5983b67..dfe9592 100644
--- a/modules/user/user.module
+++ b/modules/user/user.module
@@ -186,9 +186,9 @@ function user_entity_info() {
  * Entity uri callback.
  */
 function user_uri($user) {
-  return array(
+  return $user->uid ? array(
     'path' => 'user/' . $user->uid,
-  );
+  ) : FALSE;
 }
 
 /**