diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index b52593bd38..98bd4cbe9a 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -179,7 +179,8 @@ static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
     if (*p == '-') {
         p++;
         get_word_sep(buf, sizeof(buf), "-", &p);
-        av_parse_time(end, buf, 1);
+        if (av_parse_time(end, buf, 1) < 0)
+            av_log(NULL, AV_LOG_DEBUG, "Failed to parse interval end specification '%s'\n", buf);
     }
 }