diff --git a/internal/shell/dispatch_test.go b/internal/shell/dispatch_test.go
index d896c211d259384bce5c1ed07fcebedf75eb3367..1ada7643b5049d1675ea031d8fb921c9c0941324 100644
--- a/internal/shell/dispatch_test.go
+++ b/internal/shell/dispatch_test.go
@@ -23,7 +23,7 @@ func writeScript(t *testing.T, dir, name, contents string) string {
 	if err := os.WriteFile(path, []byte(contents), 0o755); err != nil {
 		t.Fatalf("write %s: %v", name, err)
 	}
-	return path
+	return filepath.ToSlash(path)
 }
 
 // randSuffix returns a short random hex string, used to build