diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index e71eab76cf..cb97feefda 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -2200,6 +2200,7 @@ extern AVCodec zmbv_decoder;
 extern AVCodec avs_decoder;
 extern AVCodec smacker_decoder;
 extern AVCodec smackaud_decoder;
+extern AVCodec kmvc_decoder;
 
 /* pcm codecs */
 #define PCM_CODEC(id, name) \