From ee70666b96f882382a2c5927902f91b187f70cf5 Mon Sep 17 00:00:00 2001
From: Sebastian Stehle <sebastian@squidex.io>
Date: Fri, 14 Dec 2018 20:27:14 +0100
Subject: [PATCH] Null fix.

---
 src/Squidex/Areas/Api/Controllers/MyJsonInheritanceConverter.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Squidex/Areas/Api/Controllers/MyJsonInheritanceConverter.cs b/src/Squidex/Areas/Api/Controllers/MyJsonInheritanceConverter.cs
index 36a394b5b..ed16e20b3 100644
--- a/src/Squidex/Areas/Api/Controllers/MyJsonInheritanceConverter.cs
+++ b/src/Squidex/Areas/Api/Controllers/MyJsonInheritanceConverter.cs
@@ -76,7 +76,7 @@ namespace Squidex.Areas.Api.Controllers
         public MyJsonInheritanceConverter(string discriminator, IReadOnlyDictionary<string, Type> mapping)
             : base(typeof(T), discriminator)
         {
-            maping = mapping;
+            maping = mapping ?? DefaultMapping;
         }
 
         protected override Type GetDiscriminatorType(JObject jObject, Type objectType, string discriminatorValue)