diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index 118f5325c7..d3f8a8a783 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -399,7 +399,7 @@ static int analyze(const uint8_t *buf, int size, int packet_size, int *index){
     memset(stat, 0, packet_size*sizeof(int));
 
     for(x=i=0; i<size-3; i++){
-        if(buf[i] == 0x47 && !(buf[i+1] & 0x80) && (buf[i+3] & 0x30)){
+        if(buf[i] == 0x47 && !(buf[i+1] & 0x80) && buf[i+3] != 0x47){
             stat[x]++;
             if(stat[x] > best_score){
                 best_score= stat[x];