Is it good practice to replace Class with Class<? extends Object> to avoid warnings?

In a bunch o' places in my code, I have something like this:

public Class mySpecialMethod() {
  return MySpecialClass.class;
}

which causes the warning

Class is a raw type. References to generic type Class should be parameterized.

But, if I replace

Class

with

Class<? extends Object>

the warning goes away.

Is this simple practice ok, or could it cause trouble later?