diff --git a/src/css/dashboard.css b/src/css/dashboard.css
index 7fc676b2c..1c2454802 100644
--- a/src/css/dashboard.css
+++ b/src/css/dashboard.css
@@ -72,6 +72,7 @@ iframe {
         display: none;
         }
     .tabButton {
+        border-radius: 0;
         border-top: 0;
         display: block;
         }