diff --git a/scripts/upgrade b/scripts/upgrade
index 2f97377..0f38b35 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -99,6 +99,13 @@ if [ -z "$instance_id" ]; then
 	ynh_app_setting_set "$app" instance_id "$instance_id"
 fi
 
+if [ -z "$registername" ];
+then
+      	registername=$(ynh_app_setting_get "$app" registerName)
+      	ynh_app_setting_set "$app" registername "$registername"
+      	ynh_app_setting_delete "$app" registerName
+fi
+
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================