diff --git a/libavformat/nutenc.c b/libavformat/nutenc.c
index dbecf62253..d0005f85e8 100644
--- a/libavformat/nutenc.c
+++ b/libavformat/nutenc.c
@@ -498,7 +498,6 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt){
 
         if(flags & FLAG_CODED){
             length++;
-            flags &= ~needed_flags;
             flags |=  needed_flags;
         }