diff --git a/Shogi.Api/Controllers/UserController.cs b/Shogi.Api/Controllers/UserController.cs
index c147960..85973da 100644
--- a/Shogi.Api/Controllers/UserController.cs
+++ b/Shogi.Api/Controllers/UserController.cs
@@ -59,7 +59,7 @@ public class UserController : ControllerBase
     /// <returns></returns>
     [AllowAnonymous]
     [HttpGet("LoginAsGuest")]
-    public async Task<IActionResult> GuestLogin([FromQuery] string returnUrl)
+    public async Task<IActionResult> GuestLogin([FromQuery] string? returnUrl)
     {
         var principal = await this.claimsTransformation.CreateClaimsFromGuestPrincipal(User);
         if (principal != null)
diff --git a/Shogi.Api/Program.cs b/Shogi.Api/Program.cs
index bea291d..6ddf276 100644
--- a/Shogi.Api/Program.cs
+++ b/Shogi.Api/Program.cs
@@ -43,7 +43,7 @@ namespace Shogi.Api
 
             app.UseWhen(
                 // Log anything that isn't related to swagger.
-                context => ShouldLog(context),
+                context => IsNotSwaggerUI(context),
                 appBuilder => appBuilder.UseHttpLogging());
 
             // Configure the HTTP request pipeline.
@@ -69,7 +69,7 @@ namespace Shogi.Api
 
             app.Run();
 
-            static bool ShouldLog(HttpContext context)
+            static bool IsNotSwaggerUI(HttpContext context)
             {
                 var path = context.Request.GetEncodedPathAndQuery();
 
diff --git a/Shogi.Database/Session/Types/JsonDocument.sql b/Shogi.Database/Session/Types/JsonDocument.sql
deleted file mode 100644
index 212ae06..0000000
--- a/Shogi.Database/Session/Types/JsonDocument.sql
+++ /dev/null
@@ -1,2 +0,0 @@
-CREATE TYPE [session].[JsonDocument]
-	FROM NVARCHAR(max) NOT NULL
diff --git a/Shogi.Database/Shogi.Database.sqlproj b/Shogi.Database/Shogi.Database.sqlproj
index e4b8681..75317b6 100644
--- a/Shogi.Database/Shogi.Database.sqlproj
+++ b/Shogi.Database/Shogi.Database.sqlproj
@@ -76,7 +76,6 @@
     <Build Include="User\Tables\User.sql" />
     <Build Include="Session\Types\SessionName.sql" />
     <Build Include="User\Types\UserName.sql" />
-    <Build Include="Session\Types\JsonDocument.sql" />
     <Build Include="User\StoredProcedures\CreateUser.sql" />
     <Build Include="Session\Stored Procedures\ReadSessionPlayerCount.sql" />
     <Build Include="User\StoredProcedures\ReadUser.sql" />