What's wrong with kissing up?
But no, this isn't.
Kissing up is only for superiors in positions of authority over you.
This has been reinforced repeatedly to me by my youngest, who says, "Everybody hates a suck-up, Mom" when I suggested we bring a little something to ballet class to yes, kiss up after a round of complaining by her classmates brought on a workout that involved a copious amount of Motrin for the muscles afterwards.
Trust me, it passes her "suck-up" test, so you are fine.
In fact, I think you'd be amiss or maybe remiss not to--