diff --git a/scripts/upgrade b/scripts/upgrade
index e22f89f..2d8d4f7 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -65,15 +65,22 @@ if ynh_permission_exists --permission="admin"; then
 	ynh_permission_delete --permission="admin"
 	# We use main as admin permission
         ynh_permission_url --permission="main" --url="/admin"
+fi
+
+if ! ynh_permission_exists --permission="ui"; then
 	# Create ui permission, for the dashboard
 	ynh_permission_create --permission="ui" --url="/ui" --show_tile=true
+fi
+
+if ! ynh_permission_exists --permission="endpoints"; then
 	# Create endpoints permission
 	ynh_permission_create --permission="endpoints" --url="/" --show_tile=false
-	# Transfer the publicness of the app to ui and endpoints
-	if ynh_permission_has_user --permission=main --user=visitors; then
-		ynh_permission_update --permission="ui" --add="visitors"
-		ynh_permission_update --permission="endpoints" --add="visitors"
-	fi
+fi
+
+# Transfer the publicness of the app to ui and endpoints
+if ynh_permission_has_user --permission=main --user=visitors; then
+	ynh_permission_update --permission="ui" --add="visitors"
+	ynh_permission_update --permission="endpoints" --add="visitors"
 	# Remove visitor access to the admin panel
 	ynh_permission_update --permission="main" --remove="visitors"
 fi