diff --git a/servers/slapd/back-bdb/back-bdb.h b/servers/slapd/back-bdb/back-bdb.h
index a660505f84..49eaece263 100644
--- a/servers/slapd/back-bdb/back-bdb.h
+++ b/servers/slapd/back-bdb/back-bdb.h
@@ -16,7 +16,7 @@
 LDAP_BEGIN_DECL
 
 #define BDB_FILTER_INDICES 1
-/* #define BDB_IDL_MULTI		1 */
+#define BDB_IDL_MULTI		1
 /* #define BDB_HIER		1 */
 
 #define DN_BASE_PREFIX		SLAP_INDEX_EQUALITY_PREFIX