diff --git a/libavformat/utils.c b/libavformat/utils.c
index 4f1c6a2610465c05a93806edeb2084a6ee038e7a..c85b119b9ee2f1f866628b778fe36fef05439931 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -1072,7 +1072,7 @@ int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
     return  m;
 }
 
-//#define DEBUG_SEEK
+#define DEBUG_SEEK
 
 int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
     AVInputFormat *avif= s->iformat;