diff --git a/unity/native_src/Src/CppObjectMapper.cpp b/unity/native_src/Src/CppObjectMapper.cpp
index 6a5d64b5c8..04590a6044 100644
--- a/unity/native_src/Src/CppObjectMapper.cpp
+++ b/unity/native_src/Src/CppObjectMapper.cpp
@@ -143,13 +143,16 @@ void FCppObjectMapper::CallbackDataGarbageCollected(const v8::WeakCallbackInfo<P
 
 v8::MaybeLocal<v8::Function> FCppObjectMapper::CreateFunction(v8::Local<v8::Context> Context, pesapi_callback Callback, void* Data, pesapi_function_finalize Finalize)
 {
+    auto Isolate = Context->GetIsolate();
     auto CallbackData = new PesapiCallbackData {Callback, Data, this};
     CallbackData->Finalize = Finalize;
-    auto V8Data = v8::External::New(Context->GetIsolate(), &CallbackData->Data);
-    auto Ret = v8::FunctionTemplate::New(Context->GetIsolate(), PesapiFunctionCallback, V8Data)->GetFunction(Context);
+    auto V8Data = v8::External::New(Isolate, &CallbackData->Data);
+    auto Template = v8::FunctionTemplate::New(Isolate, PesapiFunctionCallback, V8Data);
+    Template->Set(Isolate, "__do_not_cache", v8::ObjectTemplate::New(Isolate));
+    auto Ret = Template->GetFunction(Context);
     if (!Ret.IsEmpty())
     {
-        CallbackData->JsFunction.Reset(Context->GetIsolate(), Ret.ToLocalChecked());
+        CallbackData->JsFunction.Reset(Isolate, Ret.ToLocalChecked());
         CallbackData->JsFunction.SetWeak<PesapiCallbackData>(
             CallbackData, CallbackDataGarbageCollected, v8::WeakCallbackType::kInternalFields);
         FunctionDatas.push_back(CallbackData);