diff --git a/src/fuse_readdir_cosr.hpp b/src/fuse_readdir_cosr.hpp
index 5e76929b..6dba0ce7 100644
--- a/src/fuse_readdir_cosr.hpp
+++ b/src/fuse_readdir_cosr.hpp
@@ -32,9 +32,12 @@ namespace FUSE
                 unsigned max_queue_depth);
     ~ReadDirCOSR();
 
-    int operator()(const fuse_req_ctx_t   *ctx,
-                   fuse_file_info_t const *ffi,
-                   fuse_dirents_t         *buf);
+    int opendir(const fuse_req_ctx_t *ctx,
+                const char           *fusepath,
+                fuse_file_info_t     *ffi);
+    int readdir(const fuse_req_ctx_t   *ctx,
+                const fuse_file_info_t *ffi,
+                fuse_dirents_t         *buf);
 
   private:
     ThreadPool _tp;