diff --git a/src/fuse_readdir_base.hpp b/src/fuse_readdir_base.hpp
index 5e0ba8a2..1c757652 100644
--- a/src/fuse_readdir_base.hpp
+++ b/src/fuse_readdir_base.hpp
@@ -32,7 +32,7 @@ namespace FUSE
   public:
     virtual int opendir(const fuse_req_ctx_t *ctx,
                         const char           *fusepath,
-                        fuse_file_info_t *ffi) = 0;
+                        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;