diff --git a/addons/web/static/src/css/base.css b/addons/web/static/src/css/base.css
index bc9edd3c5a7..4dd69fa38ee 100644
--- a/addons/web/static/src/css/base.css
+++ b/addons/web/static/src/css/base.css
@@ -2863,7 +2863,7 @@ div.ui-widget-overlay {
 }
 .ui-menu .ui-state-focus, .ui-menu .ui-state-active {
   background: #7c7bad !important;
-  border: 0 !important;
+  border: 1px solid #7c7bad !important;
 }
 .ui-menu .ui-state-focus a, .ui-menu .ui-state-active a {
   color: #ffffff !important;
diff --git a/addons/web/static/src/css/base.sass b/addons/web/static/src/css/base.sass
index fa32f71266a..fd1d4b94690 100644
--- a/addons/web/static/src/css/base.sass
+++ b/addons/web/static/src/css/base.sass
@@ -2348,7 +2348,7 @@ div.ui-widget-overlay
             @include radius(0)
     .ui-state-focus, .ui-state-active
         background: #7c7bad !important
-        border: 0 !important
+        border: 1px solid #7c7bad !important
         a
             color: #ffffff !important
             font-weight: normal !important