Never a dull moment with the Gosselins.

An ambulance was called to Jon & Kate's Pennsylvania home Saturday, after Jon's grandma took a spill, People.com is reporting.

"Just to clear up any faulty reports: my grandmother did in fact fall in my driveway but she'll [be] fine," Jon tweeted Sunday morning. "Thank you for all of the concerned calls."

The incident put a bit of a damper on the day, as Jon had Tweeted on Saturday that it was "family day! Kids got to play with their grandparents, great grandparents...so great to see so many generations together."

Glad to hear Jon's Nana is going to be okay.