diff --git a/servers/slapd/nt_svc.c b/servers/slapd/nt_svc.c
index efbcc411e7..19d385c95c 100644
--- a/servers/slapd/nt_svc.c
+++ b/servers/slapd/nt_svc.c
@@ -1,7 +1,9 @@
 /* $OpenLDAP$ */
-// nt_main.c
+
 #include "portable.h"
 
+#include <ldap.h>
+
 static void stubs()
 {
     ldap_add_s(NULL, NULL, NULL);