diff --git a/servers/slapd/back-monitor/database.c b/servers/slapd/back-monitor/database.c
index 34d21dd6d1..611d9f5046 100644
--- a/servers/slapd/back-monitor/database.c
+++ b/servers/slapd/back-monitor/database.c
@@ -168,7 +168,7 @@ monitor_subsys_overlay_init_one(
 
 	} else {
 		attr_merge( e_overlay, slap_schema.si_ad_namingContexts,
-				be->be_suffix, NULL );
+				be->be_suffix, be->be_nsuffix );
 	}
 
 	mp_overlay = monitor_entrypriv_create();
@@ -254,9 +254,9 @@ monitor_subsys_database_init_one(
 
 	} else {
 		attr_merge( e, slap_schema.si_ad_namingContexts,
-			be->be_suffix, NULL );
+			be->be_suffix, be->be_nsuffix );
 		attr_merge( e_database, slap_schema.si_ad_namingContexts,
-			be->be_suffix, NULL );
+			be->be_suffix, be->be_nsuffix );
 
 		if ( SLAP_GLUE_SUBORDINATE( be ) ) {
 			BackendDB *sup_be = select_backend( &be->be_nsuffix[ 0 ], 1 );