diff --git a/libavformat/utils.c b/libavformat/utils.c
index 7dd9bfaa7e..63dd959af9 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2473,11 +2473,11 @@ static int compute_pkt_fields2(AVStream *st, AVPacket *pkt){
     }
 
     if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts >= pkt->dts){
-        av_log(NULL, AV_LOG_ERROR, "error, non monotone timestamps %"PRId64" >= %"PRId64"\n", st->cur_dts, pkt->dts);
+        av_log(st->codec, AV_LOG_ERROR, "error, non monotone timestamps %"PRId64" >= %"PRId64"\n", st->cur_dts, pkt->dts);
         return -1;
     }
     if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
-        av_log(NULL, AV_LOG_ERROR, "error, pts < dts\n");
+        av_log(st->codec, AV_LOG_ERROR, "error, pts < dts\n");
         return -1;
     }