Index: registration_role.module
===================================================================
--- registration_role.module	(revision 1828)
+++ registration_role.module	(working copy)
@@ -77,6 +77,6 @@
     // clear first
     // db_query( 'DELETE FROM {users_roles} WHERE uid = %d', $user->uid );
 
-    db_query('INSERT INTO {users_roles} (uid, rid) VALUES (%d, %d)', $user->uid, $rid);
+    $edit[roles][$rid] = 1;
   }
 }