diff --git a/app/assets/stylesheets/zammad.css.scss b/app/assets/stylesheets/zammad.css.scss
index 018af53e5..cc1120782 100644
--- a/app/assets/stylesheets/zammad.css.scss
+++ b/app/assets/stylesheets/zammad.css.scss
@@ -52,6 +52,13 @@ p {
 a {
   outline: none !important;
   @extend .u-highlight;
+
+  &.is-disabled,
+  &[disabled] {
+    pointer-events: none;
+    cursor: not-allowed;
+    opacity: .33;
+  }
 }
 
 a.create {