diff --git a/src/v2/guide/components-custom-events.md b/src/v2/guide/components-custom-events.md
index 20659b2c49..20748ba091 100644
--- a/src/v2/guide/components-custom-events.md
+++ b/src/v2/guide/components-custom-events.md
@@ -17,6 +17,7 @@ this.$emit('myEvent')
 Listening to the kebab-cased version will have no effect:
 
 ```html
+<!-- Won't work -->
 <my-component v-on:my-event="doSomething"></my-component>
 ```