diff --git a/libavcodec/h264.h b/libavcodec/h264.h
index e30e228bfb..66c147340b 100644
--- a/libavcodec/h264.h
+++ b/libavcodec/h264.h
@@ -286,6 +286,7 @@ typedef struct MMCO {
  * H264Context
  */
 typedef struct H264Context {
+    AVClass *av_class;
     AVCodecContext *avctx;
     VideoDSPContext vdsp;
     H264DSPContext h264dsp;