diff --git a/gtm-architect/App.tsx b/gtm-architect/App.tsx
index d49ba120..d2c9e238 100644
--- a/gtm-architect/App.tsx
+++ b/gtm-architect/App.tsx
@@ -260,7 +260,7 @@ const App: React.FC = () => {
   };
 
   const callBackend = async (mode: string, data: any) => {
-    const response = await fetch('/api/gtm', {
+    const response = await fetch('./api/gtm', {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({ mode, data })