Register class in installer

I create a WIX installer for a dll.

There is a class element that register the class of the dll in the registry.

<ClassId="{1AF5E2B9-CC02-368F-A879-1DF3F538D71A}"Context="InprocServer32"Description="AdminAddins.MyClass"ThreadingModel="both"ForeignServer="mscoree.dll"><ProgIdId="AdminAddins.MyClass"Description="AdminAddins.MyClass"/></Class>

However, it always registered under HKEY_CURRENT_USER.

Is there a way to explicitly refer the class to be registered under HKEY_LOCAL_MACHINE?