diff --git a/t/basic.t b/t/basic.t
index 7810313..2bdd9cf 100644
--- a/t/basic.t
+++ b/t/basic.t
@@ -4,9 +4,17 @@
 use Test::Mojo;
 
 my $t = Test::Mojo->new('Kalamar');
+
+$t->app->mode('production');
+
 $t->get_ok('/')
   ->status_is(200)
   ->text_is('title', 'KorAP - Corpus Analysis Platform')
   ->text_is('h1 span', 'KorAP - Corpus Analysis Platform');
 
+$t->get_ok('/huhuhuhuhu')
+  ->status_is(404)
+  ->text_is('title', 'KorAP: 404 - Page not found')
+  ->text_is('h1 span', 'KorAP: 404 - Page not found');
+
 done_testing();