diff --git a/extensions/css-language-features/server/src/test/links.test.ts b/extensions/css-language-features/server/src/test/links.test.ts
index c19f67e5e4b..96bca1e4864 100644
--- a/extensions/css-language-features/server/src/test/links.test.ts
+++ b/extensions/css-language-features/server/src/test/links.test.ts
@@ -55,7 +55,7 @@ suite('Links', () => {
 	}
 
 	function getTestResource(path: string) {
-		return URI.file(resolve(__dirname, '../../test/linksTestFixtures', path)).toString();
+		return URI.file(resolve(__dirname, '../../test/linksTestFixtures', path)).toString(true);
 	}
 
 	test('url links', async function () {