--- a/media/mtransport/third_party/nICEr/src/stun/nr_socket_buffered_stun.c
+++ b/media/mtransport/third_party/nICEr/src/stun/nr_socket_buffered_stun.c
@@ -412,30 +412,28 @@ static int nr_socket_buffered_stun_accep
 
   return nr_socket_accept(bsock->inner, addrp, sockp);
 }
 
 static void nr_socket_buffered_stun_connected_cb(NR_SOCKET s, int how, void *arg)
 {
   nr_socket_buffered_stun *sock = (nr_socket_buffered_stun *)arg;
   int r, _status;
+  NR_SOCKET fd;
 
   assert(!sock->connected);
 
   sock->connected = 1;
 
+  if ((r=nr_socket_getfd(sock->inner, &fd)))
+    ABORT(r);
+  NR_ASYNC_CANCEL(fd, NR_ASYNC_WAIT_WRITE);
+
   // once connected arm for read
   if (sock->readable_cb) {
-    NR_SOCKET fd;
-
-    /* don't use |s| directly here because the NAT emulator depends on handing
-       you its implementation here. */
-    if ((r=nr_socket_getfd(sock->inner, &fd)))
-      ABORT(r);
-
     NR_ASYNC_WAIT(fd, NR_ASYNC_WAIT_READ, sock->readable_cb, sock->readable_cb_arg);
   }
 
   if (sock->pending) {
     r_log(LOG_GENERIC, LOG_INFO, "Invoking writable_cb on connected (%u)", (uint32_t) sock->pending);
     nr_socket_buffered_stun_writable_cb(s, how, arg);
   }