diff --git a/libav/avformat.h b/libav/avformat.h
index 305085dba9..dd37a930b1 100644
--- a/libav/avformat.h
+++ b/libav/avformat.h
@@ -21,7 +21,6 @@ typedef struct AVPacket {
     int flags;
     int duration;       
 #define PKT_FLAG_KEY   0x0001
-#define PKT_FLAG_DROPPED_FRAME   0x0002
 } AVPacket; 
 
 int av_new_packet(AVPacket *pkt, int size);