Pee's when i use the vacuum..how to stop it.

Hi all,
I'm new to this forum. I am a new owner of a 11wk old goldendoodle named lilly.
She has been doing really well with housetraining thus far..only a few accidents. Two of which happened when i was using the vacuum. Even though i try not to chase her around with it and kinda avoid the general area she is in at the time she seems to get scared and pees. How do i correct this behavior, and help her to understand that the vacuum is nothing to be fearful of?