diff --git a/test/Microsoft.Health.Fhir.Tests.E2E/Common/FhirClient.cs b/test/Microsoft.Health.Fhir.Tests.E2E/Common/FhirClient.cs
index b3289e1619..5497d8543a 100644
--- a/test/Microsoft.Health.Fhir.Tests.E2E/Common/FhirClient.cs
+++ b/test/Microsoft.Health.Fhir.Tests.E2E/Common/FhirClient.cs
@@ -93,7 +93,7 @@ public async Task RunAsUser(TestUser user, TestApplication clientApplication)
         public async Task RunAsClientApplication(TestApplication clientApplication)
         {
             EnsureArg.IsNotNull(clientApplication, nameof(clientApplication));
-            await SetupAuthenticationAsync(clientApplication, null);
+            await SetupAuthenticationAsync(clientApplication);
         }
 
         public Task<FhirResponse<T>> CreateAsync<T>(T resource)