diff --git a/components/lib/dock/Dock.vue b/components/lib/dock/Dock.vue
index a2d400f4e..a165274ef 100644
--- a/components/lib/dock/Dock.vue
+++ b/components/lib/dock/Dock.vue
@@ -25,7 +25,7 @@ export default {
     extends: BaseDock,
     computed: {
         containerClass() {
-            return [this.class, cx('root')];
+            return [this.class, this.cx('root')];
         }
     },
     components: {