diff --git a/libavformat/utils.c b/libavformat/utils.c
index 81c7a0dd6e..bbb1cf766d 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2825,8 +2825,8 @@ static int get_std_framerate(int i)
  * And there are "variable" fps files this needs to detect as well. */
 static int tb_unreliable(AVCodecContext *c)
 {
-    if (c->time_base.den >= 101L * c->time_base.num ||
-        c->time_base.den <    5L * c->time_base.num ||
+    if (c->time_base.den >= 101LL * c->time_base.num ||
+        c->time_base.den <    5LL * c->time_base.num ||
         // c->codec_tag == AV_RL32("DIVX") ||
         // c->codec_tag == AV_RL32("XVID") ||
         c->codec_tag == AV_RL32("mp4v") ||