diff --git a/src/threadpool.c b/src/threadpool.c
index 2cb0d95bd1fe3df0c59176f9352fa86c53fc2861..53ba6abbb5d730c9fcc14c8a2e5bd53c68d7c6f8 100644
--- a/src/threadpool.c
+++ b/src/threadpool.c
@@ -717,6 +717,11 @@ static void uv__queue_work(struct uv__work* w) {
 static void uv__queue_done(struct uv__work* w, int err) {
   uv_work_t* req;
 
+  if (w == NULL) {
+    UV_LOGE("uv_work_t is NULL");
+    return;
+  }
+
   req = container_of(w, uv_work_t, work_req);
   uv__req_unregister(req->loop, req);