diff --git a/libraries/libldap/os-ip.c b/libraries/libldap/os-ip.c
index 60f81a788c..89d09936ab 100644
--- a/libraries/libldap/os-ip.c
+++ b/libraries/libldap/os-ip.c
@@ -581,7 +581,8 @@ ldap_connect_to_host(LDAP *ld, Sockbuf *sb,
 
 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
 	memset( &hints, '\0', sizeof(hints) );
-#ifdef AI_ADDRCONFIG
+#ifdef USE_AI_ADDRCONFIG /* FIXME: configure test needed */
+	/* Use AI_ADDRCONFIG only on systems where its known to be needed. */
 	hints.ai_flags = AI_ADDRCONFIG;
 #endif
 	hints.ai_family = ldap_int_inet4or6;