diff --git a/ext/handle_404/test.php b/ext/handle_404/test.php
index 2cbae7b2..452af8da 100644
--- a/ext/handle_404/test.php
+++ b/ext/handle_404/test.php
@@ -5,6 +5,9 @@ class Handle404Test extends SCoreWebTestCase {
 		$this->assert_response(404);
 		$this->assert_title('404');
 		$this->assert_text("No handler could be found for the page 'not/a/page'");
+
+		$this->get_page('favicon.ico');
+		$this->assert_response(200);
 	}
 }
 ?>