diff --git a/src/v2/guide/filters.md b/src/v2/guide/filters.md
index 529efaddd9..4a6eecdbf2 100644
--- a/src/v2/guide/filters.md
+++ b/src/v2/guide/filters.md
@@ -26,7 +26,7 @@ filters: {
 }
 ```
 
-or define a filter globally:
+or define a filter globally before creating the Vue instance:
 
 ``` js
 Vue.filter('capitalize', function (value) {
@@ -34,6 +34,10 @@ Vue.filter('capitalize', function (value) {
   value = value.toString()
   return value.charAt(0).toUpperCase() + value.slice(1)
 })
+
+new Vue({
+  // ...
+})
 ```
 
 Below is an example of our `capitalize` filter being used: