changing te kernel in the package selection??

Hi everyone, having my own package selection (My.sel), I want tu use k_smp kernel and not the default one (k_deflt) unfortunately, when I add k_smp in the package selection, yast warn me about a conflict with k_deflt. But k_deflt is NOT in my selection file (my.sel) , and should not be selected when I perform the installation! Is there a way of specifying I do NOT want to use k_deflt but k_smp instead? Where can I deselect it? Thanks in advance Damien.