diff --git a/src/fs/Walk.go b/src/fs/Walk_fast.go
similarity index 97%
rename from src/fs/Walk.go
rename to src/fs/Walk_fast.go
index 8253db5..0a169ab 100644
--- a/src/fs/Walk.go
+++ b/src/fs/Walk_fast.go
@@ -1,4 +1,4 @@
-//go:build !windows
+//go:build linux || darwin
 
 package fs
 
diff --git a/src/fs/Walk_windows.go b/src/fs/Walk_slow.go
similarity index 93%
rename from src/fs/Walk_windows.go
rename to src/fs/Walk_slow.go
index 28cae1a..b77cd17 100644
--- a/src/fs/Walk_windows.go
+++ b/src/fs/Walk_slow.go
@@ -1,4 +1,4 @@
-//go:build windows
+//go:build !linux && !darwin
 
 package fs