diff --git a/scripts/upgrade b/scripts/upgrade
index 29f42e4..38d6f34 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -39,8 +39,8 @@ ynh_add_nginx_config
 #=================================================
 # Framaforms 2 Yakforms Backup
 #=================================================
-upgrade_to_yakforms=false
 
+if [ "$upgrade_to_yakforms" = false ]
 then
 	update-alternatives --set php /usr/bin/php$phpversion
     upgrade_to_yakforms=true