Slip one yarn in front knit one

I am knitting a hat and it calls for slip one, yarn in front knit one
when I do this I end up with two stitches which I do not want. Please help…

Bring the yarn forward, slip the stitch as if to purl, [I]then bring the yarn to the back again[/I] in preparation for the next knit stitch.

Unless there’s a decrease later somewhere (psso/pass slip st over) then bring the yarn to the back for the knit one.