diff --git a/ext/ldap/config.w32 b/ext/ldap/config.w32
index aa3491fe670f9..2fa05f438347b 100644
--- a/ext/ldap/config.w32
+++ b/ext/ldap/config.w32
@@ -21,6 +21,7 @@ if (PHP_LDAP != "no") {
 		AC_DEFINE('HAVE_LDAP', 1);
 		AC_DEFINE('HAVE_LDAP_SASL', 1);
 		AC_DEFINE('HAVE_LDAP_SASL_SASL_H', 1);
+		AC_DEFINE('LDAP_DEPRECATED', 1);
 
 	} else {
 		WARNING("ldap not enabled; libraries and headers not found");