diff --git a/src/TesApi.Web/Startup.cs b/src/TesApi.Web/Startup.cs
index 3e05f1e6f..6fd792b45 100644
--- a/src/TesApi.Web/Startup.cs
+++ b/src/TesApi.Web/Startup.cs
@@ -21,6 +21,7 @@
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
+using Newtonsoft.Json;
 using Newtonsoft.Json.Converters;
 using Newtonsoft.Json.Serialization;
 using Tes.ApiClients;
@@ -98,6 +99,7 @@ public void ConfigureServices(IServiceCollection services)
                         {
                             opts.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
                             opts.SerializerSettings.Converters.Add(new StringEnumConverter(new CamelCaseNamingStrategy()));
+                            opts.SerializerSettings.DefaultValueHandling = Newtonsoft.Json.DefaultValueHandling.Ignore;
                         })
                     .Services
                     .AddSingleton(CreateStorageAccessProviderFromConfiguration)