diff --git a/scripts/upgrade b/scripts/upgrade
index f3b8ff7..00c21be 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -94,6 +94,7 @@ chown $app: "$install_dir/server/config.js"
 #=================================================
 ynh_script_progression --message="Upgrading systemd configuration..." --weight=2
 
+env_path="$PATH"
 # Create a dedicated systemd config
 ynh_add_systemd_config