diff --git a/libavformat/utils.c b/libavformat/utils.c
index e42c1fc8f9..360847fe68 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2652,8 +2652,8 @@ 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")