diff --git a/lib/utils/siwe-utils.js b/lib/utils/siwe-utils.js
--- a/lib/utils/siwe-utils.js
+++ b/lib/utils/siwe-utils.js
@@ -44,8 +44,8 @@
   return message.prepareMessage();
 }
 
-const expectedDomain = isDev ? 'localhost:3000' : 'comm.app';
-const expectedURI = isDev ? 'http://localhost:3000' : 'https://comm.app';
+const expectedDomain = isDev ? 'localhost:3000' : 'web.comm.app';
+const expectedURI = isDev ? 'http://localhost:3000' : 'https://web.comm.app';
 // Verify that the SIWEMessage is a well formed Comm SIWE Auth message.
 function isValidSIWEMessage(candidate: SIWEMessage): boolean {
   return (