diff --git a/reactos/lib/3rdparty/adns/src/setup.c b/reactos/lib/3rdparty/adns/src/setup.c
index 2864a5cfdb5..18157b2e589 100644
--- a/reactos/lib/3rdparty/adns/src/setup.c
+++ b/reactos/lib/3rdparty/adns/src/setup.c
@@ -680,7 +680,7 @@ void adns_finish(adns_state ads) {
     else break;
   }
   adns_socket_close(ads->udpsocket);
-  if (ads->tcpsocket >= 0) adns_socket_close(ads->tcpsocket);
+  if (ads->tcpsocket != -1) adns_socket_close(ads->tcpsocket);
   adns__vbuf_free(&ads->tcpsend);
   adns__vbuf_free(&ads->tcprecv);
   freesearchlist(ads);