diff --git a/tests/Jellyfin.Api.Tests/Auth/DefaultAuthorizationPolicy/DefaultAuthorizationHandlerTests.cs b/tests/Jellyfin.Api.Tests/Auth/DefaultAuthorizationPolicy/DefaultAuthorizationHandlerTests.cs
index ad8a051fdc..f4f6611477 100644
--- a/tests/Jellyfin.Api.Tests/Auth/DefaultAuthorizationPolicy/DefaultAuthorizationHandlerTests.cs
+++ b/tests/Jellyfin.Api.Tests/Auth/DefaultAuthorizationPolicy/DefaultAuthorizationHandlerTests.cs
@@ -66,7 +66,7 @@ namespace Jellyfin.Api.Tests.Auth.DefaultAuthorizationPolicy
 
             _userManagerMock
                 .Setup(u => u.GetUserById(It.IsAny<Guid>()))
-                .Returns<User>(null);
+                .Returns<User?>(null);
 
             var claims = new[]
             {