Kings of Leon were forced to cancel two weeks' worth of tour dates in the wake of a bus accident that left drummer Nathan Followill with broken ribs, but the band will reportedly still headline this weekend's Budweiser Made in America Festival in Philadelphia.

Except for a Questlove-aided appearance on 'The Tonight Show Starring Jimmy Falllon,' the band haven't performed since Followill was injured in the accident earlier this month that happened after a fan darted in front of Kings of Leon's tour bus in Boston. Although they were originally expected to resume their summer tour on Aug. 28 at the PNC Bank Arts Center in Holmdel, N.J., the band were forced to cancel that show along with an Aug. 29 concert at First Niagara Pavilion in Pittsburgh.

"After further evaluation, a doctor has ordered drummer Nathan Followill to remain on rest for one more week," the band said in a statement. "The drummer has been on strict doctor’s orders to rest over the past two weeks in order to recover from an injury sustained in a tour bus accident earlier this month.

Followill also tweeted his disappointment:

Despite the setback, Rolling Stone reports Kings of Leon are still set to headline the Made in America Festival on Aug. 31 and will continue the North American leg of their tour in support of 2013's 'Mechanical Bull' through the fall.

Watch Kings of Leon play with Questlove on 'The Tonight Show'