diff --git a/slack/orien.css b/slack/orien.css
index 67e6b51..f718049 100644
--- a/slack/orien.css
+++ b/slack/orien.css
@@ -33,7 +33,7 @@ limitations under the License.
    --background-bright: #FFF;
 
    --border-dim: #666;
-   --border-bright: var(#aaa);
+   --border-bright: #aaa;
 
    --text-bright: #FFF;
    --text-special: var(--primary);