diff --git a/reactos/w32api/include/winerror.h b/reactos/w32api/include/winerror.h
index 3659964bdda..9a89d5526de 100644
--- a/reactos/w32api/include/winerror.h
+++ b/reactos/w32api/include/winerror.h
@@ -1510,6 +1510,7 @@
 #define DNS_STATUS_FQDN 9557L
 #define DNS_STATUS_DOTTED_NAME 9558L
 #define DNS_STATUS_SINGLE_PART_NAME 9559L
+#define DNS_ERROR_INVALID_NAME ERROR_INVALID_NAME
 #define DNS_ERROR_INVALID_NAME_CHAR 9560L
 #define DNS_ERROR_NUMERIC_NAME 9561L
 #define DNS_ERROR_NOT_ALLOWED_ON_ROOT_SERVER 9562L