diff --git a/CredentialProvider.Microsoft/CredentialProviders/Vsts/VstsCredentialProvider.cs b/CredentialProvider.Microsoft/CredentialProviders/Vsts/VstsCredentialProvider.cs
index 11d24aa6..6bd9eb27 100644
--- a/CredentialProvider.Microsoft/CredentialProviders/Vsts/VstsCredentialProvider.cs
+++ b/CredentialProvider.Microsoft/CredentialProviders/Vsts/VstsCredentialProvider.cs
@@ -136,7 +136,7 @@ public override async Task<GetAuthenticationCredentialsResponse> HandleRequestAs
                 try
                 {
                     var result = await tokenProvider.GetTokenAsync(tokenRequest, cancellationToken);
-                    bearerToken = result.AccessToken;
+                    bearerToken = result?.AccessToken;
                 }
                 catch (Exception ex)
                 {