diff --git a/MIGRATION.md b/MIGRATION.md
index 791a6f125..4ecff7b2f 100644
--- a/MIGRATION.md
+++ b/MIGRATION.md
@@ -17,6 +17,14 @@
 
 * `HttpRequest::query()` is deprecated. Use `Query` extractor.
 
+   ```rust
+   fn index(q: Query<HashMap<String, String>>) -> Result<..> {
+       ...
+   }
+   ```
+
+   or
+
    ```rust
    let q = Query::<HashMap<String, String>>::extract(req);
    ```