diff --git a/config/module/module_test.go b/config/module/module_test.go
index bd72f0862..c63fa0201 100644
--- a/config/module/module_test.go
+++ b/config/module/module_test.go
@@ -42,7 +42,7 @@ func testModule(n string) string {
 
 	var url url.URL
 	url.Scheme = "file"
-	url.Path = p
+	url.Path = filepath.ToSlash(p)
 	return url.String()
 }