showing warning when declaring raw types

In Eclipse I see a warning in the editor each time I declare a raw type like:

List l = null;

instead of

List<MyClass> l = null

I am missing this feature. How can I activate the same behavior in IntelliJ? After browsing a bit, some people suggested to verify the settings under:
Editor->Code Style->Inspections->Java->Compiler Issues.

I verified that "Unchecked Warning" is checked there but apparently this is not what I am looking for since I still do not see any warning in my raw type declarations.

Thanks!