diff --git a/res/app/device-list/column-definitions.js b/res/app/device-list/column-definitions.js
index 3f2fc091..b5d85fbc 100644
--- a/res/app/device-list/column-definitions.js
+++ b/res/app/device-list/column-definitions.js
@@ -350,6 +350,9 @@ function DeviceStatusCell(options) {
       case 'using':
         a.className = classes + 'btn-primary'
         break
+      case 'busy':
+        a.className = classes + 'btn-warning'
+        break
       case 'available':
       case 'ready':
       case 'present':