diff --git a/Source/Engine/Serialization/JsonSerializer.cs b/Source/Engine/Serialization/JsonSerializer.cs
index a5d6e0771..076e8abe7 100644
--- a/Source/Engine/Serialization/JsonSerializer.cs
+++ b/Source/Engine/Serialization/JsonSerializer.cs
@@ -19,7 +19,7 @@ namespace FlaxEngine.Json
     {
         internal class SerializerCache
         {
-            public readonly JsonSerializerSettings JsonSettings;
+            public bool IsManagedOnly;
             public Newtonsoft.Json.JsonSerializer JsonSerializer;
             public StringBuilder StringBuilder;
             public StringWriter StringWriter;
@@ -33,9 +33,9 @@ namespace FlaxEngine.Json
             public uint CacheVersion;
 #endif
 
-            public unsafe SerializerCache(JsonSerializerSettings settings)
+            public unsafe SerializerCache(bool isManagedOnly)
             {
-                JsonSettings = settings;
+                IsManagedOnly = isManagedOnly;
                 StringBuilder = new StringBuilder(256);
                 StringWriter = new StringWriter(StringBuilder, CultureInfo.InvariantCulture);
                 MemoryStream = new UnmanagedMemoryStream((byte*)0, 0);
@@ -114,7 +114,7 @@ namespace FlaxEngine.Json
             /// <summary>Builds the serializer</summary>
             private void BuildSerializer()
             {
-                JsonSerializer = Newtonsoft.Json.JsonSerializer.CreateDefault(Settings);
+                JsonSerializer = Newtonsoft.Json.JsonSerializer.CreateDefault(IsManagedOnly ? SettingsManagedOnly : Settings);
                 JsonSerializer.Formatting = Formatting.Indented;
                 JsonSerializer.ReferenceLoopHandling = ReferenceLoopHandling.Serialize;
             }
@@ -149,8 +149,8 @@ namespace FlaxEngine.Json
         internal static ExtendedSerializationBinder SerializationBinder;
         internal static FlaxObjectConverter ObjectConverter;
         internal static ThreadLocal<SerializerCache> Current = new ThreadLocal<SerializerCache>();
-        internal static ThreadLocal<SerializerCache> Cache = new ThreadLocal<SerializerCache>(() => new SerializerCache(Settings));
-        internal static ThreadLocal<SerializerCache> CacheManagedOnly = new ThreadLocal<SerializerCache>(() => new SerializerCache(SettingsManagedOnly));
+        internal static ThreadLocal<SerializerCache> Cache = new ThreadLocal<SerializerCache>(() => new SerializerCache(false));
+        internal static ThreadLocal<SerializerCache> CacheManagedOnly = new ThreadLocal<SerializerCache>(() => new SerializerCache(true));
         internal static ThreadLocal<IntPtr> CachedGuidBuffer = new ThreadLocal<IntPtr>(() => Marshal.AllocHGlobal(32 * sizeof(char)), true);
         internal static string CachedGuidDigits = "0123456789abcdef";
 #if FLAX_EDITOR