diff --git a/tests/api/fixtures.ts b/tests/api/fixtures.ts
index 214d8be..1c9bde9 100644
--- a/tests/api/fixtures.ts
+++ b/tests/api/fixtures.ts
@@ -66,7 +66,7 @@ export const discoverTokenEndpoint = async (
     }),
   });
 
-  const matcher = indexPage.data.match(/window._env="([^"]+)"/);
+  const matcher = indexPage.data.match(/window._env\s*=\s*"([^"]+)"/);
   const serverConfig = matcher?.[1];
   if (!serverConfig) {
     return null;