diff --git a/public/upsell.html b/public/upsell.html
index 4fe6e04..1394c34 100644
--- a/public/upsell.html
+++ b/public/upsell.html
@@ -118,7 +118,7 @@
     document.getElementById("uuidDisplay").textContent = uuid ? uuid.toLowerCase() : "-";
 
 
-    const webhookBase = "https://002-001-5dd6e535-4d1c-46bc-9bd9-42ad4bc5f082.odoo4projects.com/webhook/0c8536be-d175-4740-8e78-123159193b23?uuid=${uuid}";
+    const webhookBase = `https://002-001-5dd6e535-4d1c-46bc-9bd9-42ad4bc5f082.odoo4projects.com/webhook/0c8536be-d175-4740-8e78-123159193b23?uuid=${uuid}`;
     const webhookPost = `${webhookBase}/submit-data`;
 
 async function loadData() {