diff --git a/libavcodec/h264.h b/libavcodec/h264.h
index 8af991b4c7..74c1bbf79f 100644
--- a/libavcodec/h264.h
+++ b/libavcodec/h264.h
@@ -338,6 +338,7 @@ typedef struct H264Picture {
  * H264Context
  */
 typedef struct H264Context {
+    AVClass *av_class;
     AVCodecContext *avctx;
     MECmpContext mecc;
     VideoDSPContext vdsp;