diff --git a/libavformat/mov.c b/libavformat/mov.c
index 1255824264..b3eb28738e 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -1635,7 +1635,7 @@ static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
 
 static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb,
                                   int codec_tag, int format,
-                                  int size)
+                                  int64_t size)
 {
     int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format);