In doing the homework for this lesson I ran into a problem with the Make Table Query to make a back up of the Order Table. I had an error message telling me that I could not make a table that included a calculated field. I got around it by not including the DaysToShip field in the back up table. My work around would obviously involve a need to reinstate the DaysToShip field later but I couldn't see a way of including that adjustment in the macro.