diff --git a/src/ruby/bin/interop/interop_client.rb b/src/ruby/bin/interop/interop_client.rb
index ef31f68f83b65999b99f644327d5c2b3af293d3b..50a14e3a961617cfa855fc2d9b3763d4e38742fc 100755
--- a/src/ruby/bin/interop/interop_client.rb
+++ b/src/ruby/bin/interop/interop_client.rb
@@ -211,10 +211,8 @@ class NamedTests
   def compute_engine_creds
     resp = perform_large_unary(fill_username: true,
                                fill_oauth_scope: true)
-    assert(@args.oauth_scope.include?(resp.oauth_scope),
-           'service_account_creds: incorrect oauth_scope')
     assert_equal(@args.default_service_account, resp.username,
-                 'service_account_creds: incorrect username')
+                 'compute_engine_creds: incorrect username')
     p 'OK: compute_engine_creds'
   end