diff --git a/Resources/views/Event/show.html.twig b/Resources/views/Event/show.html.twig
index a37c2308b..d4dffd9ec 100644
--- a/Resources/views/Event/show.html.twig
+++ b/Resources/views/Event/show.html.twig
@@ -128,7 +128,7 @@
             padding: .375rem 1.75rem .375rem .75rem;
             background: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 5'%3e%3cpath fill='%23343a40' d='M2 0L0 2h4zm0 5L0 3h4z'/%3e%3c/svg%3e")
                 no-repeat right .75rem center/8px 10px; background-color: white;
-            border-radius: .25rem;
+            border-radius: .25rem; border: 1px solid #ced4da;
             -webkit-appearance: none; -moz-appearance: none; appearance: none;
         }
         .input-group > .custom-select {