diff --git a/libavformat/latmenc.c b/libavformat/latmenc.c
index 8d67b5a615..707c6031c2 100644
--- a/libavformat/latmenc.c
+++ b/libavformat/latmenc.c
@@ -27,6 +27,7 @@
 #include "avformat.h"
 
 typedef struct {
+    AVClass *av_class;
     int off;
     int channel_conf;
     int object_type;