diff --git a/db/routines/vn/procedures/collection_assign.sql b/db/routines/vn/procedures/collection_assign.sql
index 13bf7f836..1c3ef06ab 100644
--- a/db/routines/vn/procedures/collection_assign.sql
+++ b/db/routines/vn/procedures/collection_assign.sql
@@ -35,7 +35,7 @@ BEGIN
 		INTO vHasTooMuchCollections,
 			 vLockName
 		FROM productionConfig pc
-			LEFT JOIN tCollection;
+			LEFT JOIN tCollection ON TRUE;
 
 	DROP TEMPORARY TABLE tCollection;