diff --git a/scripts/upgrade b/scripts/upgrade
index 8c6830d..94e197d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -43,8 +43,9 @@ ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app
 
 if $(ynh_compare_current_package_version --comparison le --version "2.6.2~ynh4")
 then
+	# Purge old root directory's contents
 	ynh_script_progression --message="Removing old files..." --weight=2
-	rm -rf $install_dir/{*,.[!.]*}
+	ynh_secure_remove --file="$install_dir" 
 fi
 
 if [[ "$upgrade_type" == "UPGRADE_APP" || $(ynh_compare_current_package_version --comparison le --version "2.6.2~ynh4") ]]; then