diff --git a/src/skins/vector/css/themes/_base.scss b/src/skins/vector/css/themes/_base.scss
index 6d1b71673..62d7af064 100644
--- a/src/skins/vector/css/themes/_base.scss
+++ b/src/skins/vector/css/themes/_base.scss
@@ -165,6 +165,7 @@ $progressbar-color: #000;
     padding-right: 1.5em;
     cursor: pointer;
     display: inline-block;
+    outline: none;
 }
 
 @define-mixin mx_DialogButton_hover {