ZZ Top’s Dusty Hill suffered a fractured shoulder after tripping over an apparently ill-placed step just prior to a concert last week in Lubbock, Texas.

“It was very dark [backstage] and this half-step wasn’t lit, so there’s no way he could’ve seen it,” said Carl Stubner, the band’s manager. “We found out that others had missed it and stumbled earlier in the day. Maybe some strategic lighting could’ve prevented this, but what’s important now is that Dusty and his medical team to do what’s necessary for a complete recovery.”

Hills has undergone treatment and the band’s dates have been postponed through May 7.