diff --git a/src/unix/udp.c b/src/unix/udp.c
index 9f87060ae..634d4a061 100644
--- a/src/unix/udp.c
+++ b/src/unix/udp.c
@@ -86,6 +86,10 @@ void uv__udp_finish_close(uv_udp_t* handle) {
     req = ngx_queue_data(q, uv_udp_send_t, queue);
     uv__req_unregister(handle->loop, req);
 
+    if (req->bufs != req->bufsml)
+      free(req->bufs);
+    req->bufs = NULL;
+
     if (req->send_cb) {
       /* FIXME proper error code like UV_EABORTED */
       uv__set_artificial_error(handle->loop, UV_EINTR);
@@ -171,6 +175,7 @@ static void uv__udp_run_completed(uv_udp_t* handle) {
 
     if (req->bufs != req->bufsml)
       free(req->bufs);
+    req->bufs = NULL;
 
     if (req->send_cb == NULL)
       continue;