diff --git a/libavformat/mpegts.h b/libavformat/mpegts.h
index b18e5a44cc..ef0ede6890 100644
--- a/libavformat/mpegts.h
+++ b/libavformat/mpegts.h
@@ -58,8 +58,6 @@
 
 #define STREAM_TYPE_SUBTITLE_DVB    0x100
 
-extern AVOutputFormat mpegts_muxer;
-
 typedef struct MpegTSContext MpegTSContext;
 
 MpegTSContext *mpegts_parse_open(AVFormatContext *s);