diff --git a/isso/js/tests/screenshots/screenshots.test.js b/isso/js/tests/screenshots/screenshots.test.js
index 2a51dc13..4757db92 100644
--- a/isso/js/tests/screenshots/screenshots.test.js
+++ b/isso/js/tests/screenshots/screenshots.test.js
@@ -40,6 +40,7 @@ test('Screenshot Postbox', async () => {
   await expect(await page.evaluate(
     () => localStorage.getItem("isso-author")))
     .toBe(null);
+  await page.waitForSelector('#isso-thread');
   const thread = await page.$('#isso-thread');
   await thread.screenshot({
     path: SCREENSHOTS_PATH + '/postbox.png'