diff --git a/packaging_apps_manifest.md b/packaging_apps_manifest.md
index 18816734..62376fea 100644
--- a/packaging_apps_manifest.md
+++ b/packaging_apps_manifest.md
@@ -75,7 +75,8 @@ The `manifest.json` file defines the app's constants, a bunch of values that Yun
 * **arguments**:
   * **install**: argument for the YunoHost's administrator to enter at installation.
     * **name**: argument identification.
-    * **type**: (optional) argument type among `domain`, `path`, `user`, `boolean` and `password`. The field will be hiden in the password case.
+    * **type**: (optional) argument type among `domain`, `path`, `user`, `app`, `boolean` and `password`. The field will be hiden in the password case.
+    * **choices** : (optional) restrict value to several choices.
     * **optional** : (optional) field which indicate if this argument is optional. It can have `true` and `false` value.
     * **ask**: question (at least in `en`) that you can translate.
     * **example**: (optional) example value to help administrator to fill the input.