diff --git a/servers/slapd/slap.h b/servers/slapd/slap.h
index 8ece7820c1..8e6e6ecb42 100644
--- a/servers/slapd/slap.h
+++ b/servers/slapd/slap.h
@@ -37,6 +37,7 @@
 
 #ifdef LDAP_DEVEL
 #define SLAP_NVALUES 1
+/* #define SLAP_NVALUES_ON_DISK 1 */
 #define SLAP_EXTENDED_SCHEMA 1
 #endif