diff --git a/include/vlc_access.h b/include/vlc_access.h
index 587b66e7f0..23f87ba811 100644
--- a/include/vlc_access.h
+++ b/include/vlc_access.h
@@ -71,6 +71,7 @@ VLC_API int access_vaDirectoryControlHelper( stream_t *p_access, int i_query, va
         p_access->pf_block = (block); \
         p_access->pf_control = (control); \
         p_access->pf_seek = (seek); \
+        p_access->pf_demux = NULL; \
     } while(0)
 
 /**