diff --git a/packages/svelte/tests/runtime-runes/samples/async-block-reject-each-during-init/_config.js b/packages/svelte/tests/runtime-runes/samples/async-block-reject-each-during-init/_config.js
index c5dae7fee2..ca5fd9ca89 100644
--- a/packages/svelte/tests/runtime-runes/samples/async-block-reject-each-during-init/_config.js
+++ b/packages/svelte/tests/runtime-runes/samples/async-block-reject-each-during-init/_config.js
@@ -24,5 +24,7 @@ export default test({
 				<p>1</p>
 			`
 		);
-	}
+	},
+
+	expect_unhandled_rejections: true
 });