diff --git a/docs/examples/table-v2/dynamic-height.vue b/docs/examples/table-v2/dynamic-height.vue
index b066673ec1..a603e24508 100644
--- a/docs/examples/table-v2/dynamic-height.vue
+++ b/docs/examples/table-v2/dynamic-height.vue
@@ -34,7 +34,7 @@ const textList = [shortText, midText, longText]
 let id = 0
 
 const dataGenerator = () => ({
-  id: `random:${++id}`,
+  id: `random-${++id}`,
   name: 'Tom',
   date: '2016-05-03',
   description: textList[Math.floor(Math.random() * 3)],