diff --git a/EnvelopeGenerator.API/yarp.json b/EnvelopeGenerator.API/yarp.json
index 954846a3..427b5da4 100644
--- a/EnvelopeGenerator.API/yarp.json
+++ b/EnvelopeGenerator.API/yarp.json
@@ -29,9 +29,12 @@
         "ClusterId": "receiver-ui",
         "Order": 100,
         "Match": {
-          "Path": "/envelope/{**catch-all}",
+          "Path": "/envelope/{EnvelopeKey}",
           "Methods": [ "GET", "HEAD" ]
-        }
+        },
+        "Transforms": [
+          { "PathSet": "/index.html" }
+        ]
       },
       "receiver-ui-static-assets": {
         "ClusterId": "receiver-ui",