diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 2c727d042b..524bbb3de7 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -892,6 +892,7 @@ int ff_mpeg4_decode_partitions(MpegEncContext *s);
 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
 int ff_h263_resync(MpegEncContext *s);
 int ff_h263_get_gob_height(MpegEncContext *s);
+void ff_mpeg4_init_direct_mv(MpegEncContext *s);
 int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
 int ff_h263_round_chroma(int x);
 void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);