How to prevent capping surface from being created for tapped hole feature in assemblies?

Hi,
Would anyone know how to prevent Creo 10 from creating cap surfaces for tapped holes while using the Creo Parametric Hole feature?
The surface shown in the image below is not the side wall of the thread but a cap surface at the top of the thread.  This makes you have to query select the hole which is an extra step when assembling parts to the tapped hole at the top-level assembly.
Thanks for any help you can provide,
Don A