diff --git a/Shogi.Api/Program.cs b/Shogi.Api/Program.cs
index 6f79d4f..f62e651 100644
--- a/Shogi.Api/Program.cs
+++ b/Shogi.Api/Program.cs
@@ -198,6 +198,8 @@ namespace Shogi.Api
                     {
                         Implicit = new OpenApiOAuthFlow
                         {
+                            // These urls might be why only my email can login.
+                            // TODO: Try testing with tenantId in the url instead of "common".
                             AuthorizationUrl = new Uri("https://login.microsoftonline.com/common/oauth2/v2.0/authorize"),
                             TokenUrl = new Uri("https://login.microsoftonline.com/common/oauth2/v2.0/token"),
                             Scopes = new Dictionary<string, string>