diff --git a/Demos/02-add-aad-auth/graph-tutorial/Helpers/GraphHelper.cs b/Demos/02-add-aad-auth/graph-tutorial/Helpers/GraphHelper.cs
index 2e5d875..59a8268 100644
--- a/Demos/02-add-aad-auth/graph-tutorial/Helpers/GraphHelper.cs
+++ b/Demos/02-add-aad-auth/graph-tutorial/Helpers/GraphHelper.cs
@@ -13,10 +13,11 @@ public static async Task<User> GetUserDetailsAsync(string accessToken)
         {
             var graphClient = new GraphServiceClient(
                 new DelegateAuthenticationProvider(
-                    async (requestMessage) =>
+                    (requestMessage) =>
                     {
                         requestMessage.Headers.Authorization =
                             new AuthenticationHeaderValue("Bearer", accessToken);
+                        return Task.FromResult(0);
                     }));
 
             return await graphClient.Me.Request().GetAsync();
diff --git a/Demos/03-add-msgraph/graph-tutorial/Helpers/GraphHelper.cs b/Demos/03-add-msgraph/graph-tutorial/Helpers/GraphHelper.cs
index dd47598..cd82c1b 100644
--- a/Demos/03-add-msgraph/graph-tutorial/Helpers/GraphHelper.cs
+++ b/Demos/03-add-msgraph/graph-tutorial/Helpers/GraphHelper.cs
@@ -26,10 +26,11 @@ public static async Task<User> GetUserDetailsAsync(string accessToken)
         {
             var graphClient = new GraphServiceClient(
                 new DelegateAuthenticationProvider(
-                    async (requestMessage) =>
+                    (requestMessage) =>
                     {
                         requestMessage.Headers.Authorization =
                             new AuthenticationHeaderValue("Bearer", accessToken);
+                        return Task.FromResult(0);
                     }));
 
             return await graphClient.Me.Request().GetAsync();
@@ -58,7 +59,7 @@ private static GraphServiceClient GetAuthenticatedClient()
                             .WithClientSecret(appSecret)
                             .Build();
 
-                        var tokenStore = new SessionTokenStore(idClient.UserTokenCache, 
+                        var tokenStore = new SessionTokenStore(idClient.UserTokenCache,
                             HttpContext.Current, ClaimsPrincipal.Current);
 
                         var accounts = await idClient.GetAccountsAsync();
diff --git a/tutorial/04-add-aad-auth.md b/tutorial/04-add-aad-auth.md
index b9b94e8..3d7ad42 100644
--- a/tutorial/04-add-aad-auth.md
+++ b/tutorial/04-add-aad-auth.md
@@ -239,10 +239,11 @@ Once the user is logged in, you can get their information from Microsoft Graph.
             {
                 var graphClient = new GraphServiceClient(
                     new DelegateAuthenticationProvider(
-                        async (requestMessage) =>
+                        (requestMessage) =>
                         {
                             requestMessage.Headers.Authorization =
                                 new AuthenticationHeaderValue("Bearer", accessToken);
+                            return Task.FromResult(0);
                         }));
 
                 return await graphClient.Me.Request().GetAsync();