You seem to be using i686 Debian architecture:- if it is an educated choice and you do want want 32 bits only, that is perfectly fine - if you have chosen i686 Debian architecture because you have an Intel CPU, please be aware that in Debian, i686 architecture is for 32 bits Intel or AMD CPUs, while amd64 architecture is the one to go for 64 bits CPUs, either Intel or AMD.