By Ariana Bacle
February 05, 2014 at 04:26 PM EST

Reality TV star Kylie Jenner ended up in the hospital after some fun on a trampoline with her sisters got rowdy. Jenner posted a photo of herself on Instagram on Tuesday with the caption, “In the hospital thanks to @khloekardashian (Look at her page for the reason why) my mom said ‘never thought I would take u to the doctor for a trampoline accident at this age) this means war Khloe. Ps. It was painful taking this photo.”

Khloe Kardashian’s Instagram has a picture of the two half-sisters messing around on a trampoline with the caption, “This started out calm and ended in war! Sorry @kyliejenner.”