diff --git a/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs b/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs
index 545937207c..77f6695bb7 100644
--- a/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs
+++ b/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs
@@ -310,6 +310,7 @@ namespace Jellyfin.Server.Extensions
 
                 // Allow parameters to properly be nullable.
                 c.UseAllOfToExtendReferenceSchemas();
+                c.SupportNonNullableReferenceTypes();
 
                 // TODO - remove when all types are supported in System.Text.Json
                 c.AddSwaggerTypeMappings();