diff --git a/scripts/change_url b/scripts/change_url
index 1fa2763..612f31b 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -28,6 +28,10 @@ ynh_script_progression --message="Loading installation settings..." --time --wei
 
 # Needed for helper "ynh_add_nginx_config"
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
+port=$(ynh_app_setting_get --app=$app --key=port)
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
+api_secret=$(ynh_app_setting_get --app=$app --key=api_secret)
+invite_secret=$(ynh_app_setting_get --app=$app --key=invite_secret)
 
 # Add settings here as needed by your application
 #db_name=$(ynh_app_setting_get --app=$app --key=db_name)
diff --git a/scripts/install b/scripts/install
index 3d48706..54a83c1 100755
--- a/scripts/install
+++ b/scripts/install
@@ -104,12 +104,6 @@ ynh_add_nginx_config
 #=================================================
 ynh_script_progression --message="Installing NodeJS dependencies..." --time --weight=1
 
-invite_secret=$(ynh_string_random --length=32)
-api_secret=$(ynh_string_random --length=32)
-
-ynh_app_setting_set --app=$app --key=invite_secret --value=$invite_secret
-ynh_app_setting_set --app=$app --key=api_secret --value=$api_secret
-
 pushd $final_path
 	ynh_exec_as $app $ynh_node_load_PATH $ynh_npm --loglevel=error install
 	ynh_exec_as $app $ynh_node_load_PATH $ynh_npm --loglevel=error audit fix
@@ -134,6 +128,12 @@ chown -R $app:www-data "$datadir"
 #=================================================
 ynh_script_progression --message="Adding a configuration file..." --time --weight=1
 
+invite_secret=$(ynh_string_random --length=32)
+api_secret=$(ynh_string_random --length=32)
+
+ynh_app_setting_set --app=$app --key=invite_secret --value=$invite_secret
+ynh_app_setting_set --app=$app --key=api_secret --value=$api_secret
+
 ynh_add_config --template="default.json" --destination="$final_path/config/default.json"
 
 chmod 400 "$final_path/config/default.json"
diff --git a/scripts/upgrade b/scripts/upgrade
index 7e1562a..2e97584 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -18,10 +18,11 @@ app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
-admin=$(ynh_app_setting_get --app=$app --key=admin)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-language=$(ynh_app_setting_get --app=$app --key=language)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+port=$(ynh_app_setting_get --app=$app --key=port)
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
+api_secret=$(ynh_app_setting_get --app=$app --key=api_secret)
+invite_secret=$(ynh_app_setting_get --app=$app --key=invite_secret)
 
 #=================================================
 # CHECK VERSION