diff --git a/t/doc.t b/t/doc.t
index 503c2a5..ebb3c2b 100644
--- a/t/doc.t
+++ b/t/doc.t
@@ -103,4 +103,8 @@
   ->text_is('#api-service-uri', 'https://korap.ids-mannheim.de/test/api/v1.0/');
 
 
+# Check mail_to_chiffre
+like($t->app->mail_to_chiffre('korap@korap.example'),qr!rel="nofollow"!);
+like($t->app->mail_to_chiffre('korap@korap.example'),qr!class="PArok"!);
+
 done_testing();