diff --git a/web/grpc/identity-service-client-wrapper.js b/web/grpc/identity-service-client-wrapper.js
--- a/web/grpc/identity-service-client-wrapper.js
+++ b/web/grpc/identity-service-client-wrapper.js
@@ -478,7 +478,8 @@
 
     const userID = response.getUserId();
     const accessToken = response.getAccessToken();
-    const identityAuthResult = { accessToken, userID, username: '' };
+    const username = response.getUsername();
+    const identityAuthResult = { accessToken, userID, username };
 
     return assertWithValidator(identityAuthResult, identityAuthResultValidator);
   };