diff --git a/libavformat/udp.c b/libavformat/udp.c
index c4e403bbfc..9b9d3de197 100644
--- a/libavformat/udp.c
+++ b/libavformat/udp.c
@@ -903,6 +903,10 @@ static int udp_open(URLContext *h, const char *uri, int flags)
     if ((!is_output && s->circular_buffer_size) || (is_output && s->bitrate && s->circular_buffer_size)) {
         /* start the task going */
         s->fifo = av_fifo_alloc(s->circular_buffer_size);
+        if (!s->fifo) {
+            ret = AVERROR(ENOMEM);
+            goto fail;
+        }
         ret = pthread_mutex_init(&s->mutex, NULL);
         if (ret != 0) {
             av_log(h, AV_LOG_ERROR, "pthread_mutex_init failed : %s\n", strerror(ret));