diff --git a/src/io/fs/walk.go b/src/io/fs/walk.go
index dfc7376..06d0b176 100644
--- a/src/io/fs/walk.go
+++ b/src/io/fs/walk.go
@@ -64,7 +64,7 @@
 //   - If a directory read fails, the function is called a second time
 //     for that directory to report the error.
 //
-type WalkDirFunc func(path string, entry DirEntry, err error) error
+type WalkDirFunc func(path string, d DirEntry, err error) error
 
 // walkDir recursively descends path, calling walkDirFn.
 func walkDir(fsys FS, name string, d DirEntry, walkDirFn WalkDirFunc) error {