pushing out 32bit and 64 bit versions

Hi,

I am upgrading from version 12.1.5 to 12.1.6. I have already succesfully upgraded the SEPM. I now need to upgrade the clients. I have a container with a mix of 32bit and 64bit clients. I took a 64bit client out and put it in a test container and pushed out the 32bit version using the auto update feature. The 32bit version installed on the 64bit machine. Is there an issue with having 32bit software on 64bit machines? Also is there something else I needed to do to make sure that the 64bit machine rejected the 32bit package?

Thanks in advance!