diff --git a/libavformat/sierravmd.c b/libavformat/sierravmd.c
index 5660282db2..9d069fdff6 100644
--- a/libavformat/sierravmd.c
+++ b/libavformat/sierravmd.c
@@ -161,7 +161,7 @@ static int vmd_read_header(AVFormatContext *s,
     vmd->frame_table = NULL;
     sound_buffers = AV_RL16(&vmd->vmd_header[808]);
     raw_frame_table_size = vmd->frame_count * 6;
-    if(vmd->frame_count * vmd->frames_per_block  >= (UINT_MAX - sound_buffers) / sizeof(vmd_frame)){
+    if(vmd->frame_count * vmd->frames_per_block >= UINT_MAX / sizeof(vmd_frame) - sound_buffers){
         av_log(s, AV_LOG_ERROR, "vmd->frame_count * vmd->frames_per_block too large\n");
         return -1;
     }