--- servers/slapd/overlays/syncprov.c	2007/03/20 00:07:10	1.185
+++ servers/slapd/overlays/syncprov.c	2007/04/20 20:32:58	1.186
@@ -1,4 +1,4 @@
-/* $OpenLDAP: pkg/ldap/servers/slapd/overlays/syncprov.c,v 1.184 2007/02/16 01:22:25 hyc Exp $ */
+/* $OpenLDAP: pkg/ldap/servers/slapd/overlays/syncprov.c,v 1.185 2007/03/20 00:07:10 ando Exp $ */
 /* syncprov.c - syncrepl provider */
 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
  *
@@ -2708,8 +2708,13 @@ static int syncprov_parseCtrl (
 		return LDAP_PROTOCOL_ERROR;
 	}
 
+	if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
+		rs->sr_text = "Sync control value is absent";
+		return LDAP_PROTOCOL_ERROR;
+	}
+
 	if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
-		rs->sr_text = "Sync control value is empty (or absent)";
+		rs->sr_text = "Sync control value is empty";
 		return LDAP_PROTOCOL_ERROR;
 	}