diff --git a/libavformat/smacker.c b/libavformat/smacker.c
index 8b1e185817..14c5e3c1c7 100644
--- a/libavformat/smacker.c
+++ b/libavformat/smacker.c
@@ -104,8 +104,8 @@ static int smacker_read_header(AVFormatContext *s)
     height = avio_rl32(pb);
     smk->frames = avio_rl32(pb);
     pts_inc = avio_rl32(pb);
-    if (pts_inc > INT_MAX / 100) {
-        av_log(s, AV_LOG_ERROR, "pts_inc %d is too large\n", pts_inc);
+    if (pts_inc > INT_MAX / 100 || pts_inc == INT_MIN) {
+        av_log(s, AV_LOG_ERROR, "pts_inc %d is invalid\n", pts_inc);
         return AVERROR_INVALIDDATA;
     }