diff --git a/dlls/ws2_32/socket.c b/dlls/ws2_32/socket.c
index 63607fec1ff..6254bba96be 100644
--- a/dlls/ws2_32/socket.c
+++ b/dlls/ws2_32/socket.c
@@ -2798,6 +2798,9 @@ INT WINAPI WSAIoctl(SOCKET s,
         release_sock_fd(s, fd);
         break;
    }
+   case WS_SIO_UDP_CONNRESET:
+       FIXME("WS_SIO_UDP_CONNRESET stub\n");
+       break;
    default:
        FIXME("unsupported WS_IOCTL cmd (%08x)\n", dwIoControlCode);
        WSASetLastError(WSAEOPNOTSUPP);