diff --git a/servers/slapd/back-meta/config.c b/servers/slapd/back-meta/config.c
index 04fc7d9fac..00e430566f 100644
--- a/servers/slapd/back-meta/config.c
+++ b/servers/slapd/back-meta/config.c
@@ -73,6 +73,7 @@
 
 #include "slap.h"
 #include "../back-ldap/back-ldap.h"
+#undef ldap_debug	/* silence a warning in ldap-int.h */
 #include "../../../libraries/libldap/ldap-int.h"
 #include "back-meta.h"