diff --git a/gui/default/assets/css/overrides.css b/gui/default/assets/css/overrides.css
index 10ef4803..71c299c9 100644
--- a/gui/default/assets/css/overrides.css
+++ b/gui/default/assets/css/overrides.css
@@ -191,6 +191,7 @@ button.panel-heading {
     border-top-width: 0;
     border-left-width: 0;
     border-right-width: 0;
+    border-radius: 0 !important;
 }
 
 .panel-heading .panel-title-text {