diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h
index 701a211544..98c1a3c157 100644
--- a/fftools/ffmpeg.h
+++ b/fftools/ffmpeg.h
@@ -661,7 +661,6 @@ extern enum VideoSyncMethod video_sync_method;
 extern float frame_drop_threshold;
 extern int do_benchmark;
 extern int do_benchmark_all;
-extern int do_deinterlace;
 extern int do_hex_dump;
 extern int do_pkt_dump;
 extern int copy_ts;