diff --git a/docs/v2/examples/flags.md b/docs/v2/examples/flags.md
index 44c643a397..873c6ff7e7 100644
--- a/docs/v2/examples/flags.md
+++ b/docs/v2/examples/flags.md
@@ -51,7 +51,8 @@ func main() {
 ```
 
 You can also set a destination variable for a flag, to which the content will be
-scanned.
+scanned. Note that if the `Value` is set for the flag, it will be shown as default,
+and destination will be set to this value before parsing flag on the command line.
 
 <!-- {
   "output": "Hello someone"