diff --git a/testassets/Shared/InteropClient.cs b/testassets/Shared/InteropClient.cs
index 3feccd70a..4c996e68c 100644
--- a/testassets/Shared/InteropClient.cs
+++ b/testassets/Shared/InteropClient.cs
@@ -245,7 +245,7 @@ private async Task<ChannelCredentials> CreateCredentialsAsync(bool? useTestCaOve
         if (options.TestCase == "compute_engine_creds")
         {
             var googleCredential = await GoogleCredential.GetApplicationDefaultAsync();
-            Assert.IsFalse(googleCredential.IsCreateScopedRequired);
+            Assert.IsTrue(googleCredential.UnderlyingCredential is ComputeCredential);
             credentials = ChannelCredentials.Create(credentials, googleCredential.ToCallCredentials());
         }
 #else