diff --git a/src/components/AppHeader/AppHeader.vue b/src/components/AppHeader/AppHeader.vue
index 2ad208f..48a68fc 100644
--- a/src/components/AppHeader/AppHeader.vue
+++ b/src/components/AppHeader/AppHeader.vue
@@ -92,6 +92,8 @@
           return 'success';
         case 'error':
           return 'danger';
+        case 'diagnosticMode':
+          return 'warning';
         case 'off':
         default:
           return 'secondary';
