diff --git a/src/fuse_readdir_base.hpp b/src/fuse_readdir_base.hpp
index 7e598bdd..5e0ba8a2 100644
--- a/src/fuse_readdir_base.hpp
+++ b/src/fuse_readdir_base.hpp
@@ -30,6 +30,9 @@ namespace FUSE
     virtual ~ReadDirBase() {};
 
   public:
+    virtual int opendir(const fuse_req_ctx_t *ctx,
+                        const char           *fusepath,
+                        fuse_file_info_t *ffi) = 0;
     virtual int operator()(const fuse_req_ctx_t   *ctx,
                            const fuse_file_info_t *ffi,
                            fuse_dirents_t         *buf) = 0;