diff --git a/Source/Editor/Managed/ManagedEditor.Internal.cpp b/Source/Editor/Managed/ManagedEditor.Internal.cpp
index 53c0fbab2..8ee058552 100644
--- a/Source/Editor/Managed/ManagedEditor.Internal.cpp
+++ b/Source/Editor/Managed/ManagedEditor.Internal.cpp
@@ -204,7 +204,7 @@ DEFINE_INTERNAL_CALL(bool) EditorInternal_SaveJsonAsset(MString* outputPathObj,
     FileSystem::NormalizePath(outputPath);
 
     const StringView dataObjChars = MCore::String::GetChars(dataObj);
-    const StringAsANSI<> data(dataObjChars.Get(), dataObjChars.Length());
+    const StringAsUTF8<> data(dataObjChars.Get(), dataObjChars.Length());
     const StringAnsiView dataAnsi(data.Get(), data.Length());
 
     const StringView dataTypeNameObjChars = MCore::String::GetChars(dataTypeNameObj);
diff --git a/Source/Engine/Serialization/JsonSerializer.cs b/Source/Engine/Serialization/JsonSerializer.cs
index 076e8abe7..076beef7d 100644
--- a/Source/Engine/Serialization/JsonSerializer.cs
+++ b/Source/Engine/Serialization/JsonSerializer.cs
@@ -15,6 +15,17 @@ using Newtonsoft.Json.Serialization;
 
 namespace FlaxEngine.Json
 {
+    sealed class StringWriterWithEncoding : StringWriter
+    {
+        public override Encoding Encoding { get; }
+
+        public StringWriterWithEncoding(System.Text.StringBuilder sb, IFormatProvider formatProvider, Encoding encoding)
+        : base(sb, formatProvider)
+        {
+            Encoding = encoding;
+        }    
+    }
+
     partial class JsonSerializer
     {
         internal class SerializerCache
@@ -37,7 +48,7 @@ namespace FlaxEngine.Json
             {
                 IsManagedOnly = isManagedOnly;
                 StringBuilder = new StringBuilder(256);
-                StringWriter = new StringWriter(StringBuilder, CultureInfo.InvariantCulture);
+                StringWriter = new StringWriterWithEncoding(StringBuilder, CultureInfo.InvariantCulture, Encoding.UTF8);
                 MemoryStream = new UnmanagedMemoryStream((byte*)0, 0);
 
 #if FLAX_EDITOR