diff --git a/tests/server/sockfilt.c b/tests/server/sockfilt.c
index e29e118714..7009b2585b 100644
--- a/tests/server/sockfilt.c
+++ b/tests/server/sockfilt.c
@@ -741,6 +741,9 @@ static int select_ws(int nfds, fd_set *readfds, fd_set *writefds,
       else {
         wsaevent = WSACreateEvent();
         if(wsaevent != WSA_INVALID_EVENT) {
+          if(wsaevents.lNetworkEvents & FD_WRITE) {
+            send(wsasock, NULL, 0, 0); /* reset FD_WRITE */
+          }
           error = WSAEventSelect(wsasock, wsaevent, wsaevents.lNetworkEvents);
           if(error != SOCKET_ERROR) {
             handles[nfd] = (HANDLE)wsaevent;