diff --git a/scripts/install b/scripts/install
index 9048be1..160b91d 100644
--- a/scripts/install
+++ b/scripts/install
@@ -154,7 +154,7 @@ ynh_systemd_action --service_name "uwsgi-app@$app.service" --line_match "WSGI ap
 ynh_script_progression --message="Configuring permissions"
 
 # Everyone can access the app. (authentification is done by firefox accounts)
-ynh_permission_update --permission=main --add=visitors --protected=true --show_tile=true
+ynh_permission_update --permission="main" --add="visitors" --protected=true --show_tile=true
 
 #=================================================
 # RELOAD NGINX
diff --git a/scripts/upgrade b/scripts/upgrade
index fe9f9d5..1f3cc63 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -95,7 +95,7 @@ then
     ynh_legacy_permissions_delete_all
     ynh_app_setting_delete --app=$app --key=is_public
 fi
-ynh_permission_update --permission=main --add=visitors --protected=true --show_tile=true
+ynh_permission_update --permission="main" --add="visitors" --protected=true --show_tile=true
 
 #=================================================
 # CREATE DEDICATED USER