diff --git a/db_scripts/diff/10877.up b/db_scripts/diff/10877.up
index b1eef194..9036c988 100644
--- a/db_scripts/diff/10877.up
+++ b/db_scripts/diff/10877.up
@@ -1,4 +1,4 @@
 #Fix the unsynced rules default values
 ALTER TABLE provisioning.voip_peer_rules CHANGE COLUMN callee_pattern callee_pattern VARCHAR(64) DEFAULT '';
-UPDATE provisioning.voip_peer_rules SET callee_pattern='' where callee_pattern=NULL;
-UPDATE kamailio.lcr_rule SET request_uri='' where request_uri=NULL;
+UPDATE provisioning.voip_peer_rules SET callee_pattern='' where callee_pattern IS NULL;
+UPDATE kamailio.lcr_rule SET request_uri='' where request_uri IS NULL;