diff --git a/src/webex/wxBackend.ts b/src/webex/wxBackend.ts
index 98b543d28..30842398b 100644
--- a/src/webex/wxBackend.ts
+++ b/src/webex/wxBackend.ts
@@ -514,7 +514,7 @@ function handleHttpPayment(headerList: chrome.webRequest.HttpHeader[], url: stri
     console.log("processing refund");
     const uri = new URI(chrome.extension.getURL("/src/webex/pages/refund.html"));
     uri.query({ refundUrl: fields.refund_url });
-    return { redirectUrl: uri.href };
+    return { redirectUrl: uri.href() };
   }
 
   // We need to do some asynchronous operation, we can't directly redirect