diff --git a/actionsmap/yunohost.yml b/actionsmap/yunohost.yml
index 75899f3cf..cfd51caf7 100644
--- a/actionsmap/yunohost.yml
+++ b/actionsmap/yunohost.yml
@@ -373,7 +373,7 @@ app:
                             - '^[a-z0-9_]+$'
                             - pattern_username
 
-        ### app_install() TODO: Write help
+        ### app_install()
         install:
             action_help: Install apps
             api: POST /apps
@@ -383,7 +383,7 @@ app:
                 lock: false
             arguments:
                 app:
-                    help: App to install
+                    help: Name, local path or git URL of the app to install
                 -l:
                     full: --label
                     help: Custom name for the app
diff --git a/app.py b/app.py
index ed7e5bdac..090d7d05b 100644
--- a/app.py
+++ b/app.py
@@ -379,9 +379,9 @@ def app_install(auth, app, label=None, args=None):
     Install apps
 
     Keyword argument:
-        label
-        app -- App to install
-        args -- Serialize arguments of installation
+        app -- Name, local path or git URL of the app to install
+        label -- Custom name for the app
+        args -- Serialize arguments for app installation
 
     """
     from yunohost.hook import hook_add, hook_remove, hook_exec