The () is personal preference. They don't affect the compiled code what-so-ever only how your code is read. So honestly it would be up to you as how you prefer your own code-style to be. It's like that last semi-colon before the end in the main code block. You'll notice that he didn't add that either. I always add the semi-colon myself unless it's right before an else in an if .. than .. else statement.