diff --git a/legacy_app_ynh/manifest.json b/legacy_app_ynh/manifest.json
index 5c37eeb..6c2d92c 100644
--- a/legacy_app_ynh/manifest.json
+++ b/legacy_app_ynh/manifest.json
@@ -30,6 +30,14 @@
                 },
                 "example": "/legacy",
                 "default": "/legacy"
+            },
+            {
+                "name": "is_public",
+                "type": "boolean",
+                "ask": {
+                    "en": "Is it a public application?"
+                },
+                "default": true
             }
         ]
     }
diff --git a/legacy_app_ynh/scripts/install b/legacy_app_ynh/scripts/install
index 475670c..1244cc0 100644
--- a/legacy_app_ynh/scripts/install
+++ b/legacy_app_ynh/scripts/install
@@ -5,6 +5,7 @@ app=$YNH_APP_INSTANCE_NAME
 number=$YNH_APP_INSTANCE_NUMBER
 domain=$YNH_APP_ARG_DOMAIN
 path=$YNH_APP_ARG_PATH
+is_public=$YNH_APP_ARG_IS_PUBLIC
 
 # Check domain/path availability
 sudo yunohost app checkurl $domain/$path -a $app
@@ -34,7 +35,7 @@ sudo yunohost app setting $app mysqlpwd -v $db_pwd
 sudo cp ../sources/importantfile /etc/
 
 # Set the app as public
-sudo yunohost app setting $app unprotected_uris -v "/"
+[ $is_public -eq 0 ] || sudo yunohost app setting $app unprotected_uris -v "/"
 
 # Reload Nginx and regenerate SSOwat conf
 sudo service nginx reload