diff --git a/packages/svelte/test/helpers.js b/packages/svelte/test/helpers.js
index 596086f986..b5ee539be8 100644
--- a/packages/svelte/test/helpers.js
+++ b/packages/svelte/test/helpers.js
@@ -100,7 +100,7 @@ export function show_output(cwd, options = {}) {
 	});
 }
 
-const svelte_path = fileURLToPath(new URL('..', import.meta.url)).replace(/\\/g, '/');
+const svelte_path = fileURLToPath(new URL('..', import.meta.url).href).replace(/\\/g, '/');
 
 const AsyncFunction = /** @type {typeof Function} */ (async function () {}.constructor);