diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c
index e8f99dc5cf..b6a2b44bc6 100644
--- a/libavcodec/mpeg12dec.c
+++ b/libavcodec/mpeg12dec.c
@@ -3000,7 +3000,7 @@ static int ipu_decode_frame(AVCodecContext *avctx, void *data,
     int ret;
 
     // Check for minimal intra MB size (considering mb header, luma & chroma dc VLC, ac EOB VLC)
-    if (avpkt->size*8LL < (avctx->width+15)/16 * ((avctx->height+15)/16) * (2 + 3*4 + 2*2 + 2*6))
+    if (avpkt->size*8LL < (avctx->width+15)/16 * ((avctx->height+15)/16) * (2LL + 3*4 + 2*2 + 2*6))
         return AVERROR_INVALIDDATA;
 
     ret = ff_get_buffer(avctx, frame, 0);