diff --git a/src/dropdown-menu/demos/direction.vue b/src/dropdown-menu/demos/direction.vue
index ac4f26500..33844a22b 100644
--- a/src/dropdown-menu/demos/direction.vue
+++ b/src/dropdown-menu/demos/direction.vue
@@ -1,5 +1,5 @@
 <template>
-  <t-dropdown-menu :direction="'up'" @menu-opened="handleMenuOpened" @menu-closed="handleMenuClosed">
+  <t-dropdown-menu direction="up" @menu-opened="handleMenuOpened" @menu-closed="handleMenuClosed">
     <t-dropdown-item :options="product.options" :value="product.value" @change="onChange" />
     <t-dropdown-item :options="sorter.options" :value="sorter.value" />
   </t-dropdown-menu>