How to avoid multiple "close" actions, in conjunction with "personal" workbook.

I created a "personal" workbook, and added a few simple macros and UDF's.

Everything seems to work OK, including the UDF's.

However now, whenever I close a workbook, it is a two step process:

When I close the primary workbook, I then have to seperately close the personal workbook,
even if I haven't modified any macros or UDF's and
even if my primary workbook doesn't use any macros or UDF's.

Is there a way to avoid the extra (manual) close?

Thank you.

it's better saving file with udf as superstructure

Thanks for the reply, but I'm not sure what that means, or how to do it.