1% increases damage per 1% of bonus movespeed

Rogue
1

Got a question, rogue has a passive that 1% increases damage per 1% of bonus move speed.
I notice that the boots Vaion’s Chariot has the exact same thing.
If i take both does the bonus stack, or does it only apply once?

2

It’s stacking so You get 2% increase per 1% bonus move speed