diff --git a/src/GeoJSON.Net/Feature/Feature.cs b/src/GeoJSON.Net/Feature/Feature.cs
index 5624cbc..3ced99e 100644
--- a/src/GeoJSON.Net/Feature/Feature.cs
+++ b/src/GeoJSON.Net/Feature/Feature.cs
@@ -39,7 +39,7 @@ public Feature(TGeometry geometry, TProps properties, string id = null)
         [JsonConverter(typeof(GeometryConverter))]
         public TGeometry Geometry { get; }
         
-        [JsonProperty(PropertyName = "properties", Required = Required.AllowNull)]
+        [JsonProperty(PropertyName = "properties", Required = Required.Default)]
         public TProps Properties { get; }
         
         /// <summary>