Rep. John Dingell (D-Mich.) was taken to the hospital Tuesday afternoon after experiencing what his office called “some discomfort.”

“This afternoon Congressman Dingell felt some discomfort, and as a precautionary measure, he was admitted to the hospital,” Dingell spokesman Adam Benson said. “The Congressman is fully conscious and was joking with his staff from his cell phone while en route to the hospital. The Congressman expects to be back to work for the people of Michigan in about a day or so.”

Dingell, 82, was in his Washington, D.C., office during the incident. The 26-term Democrat and outgoing chairman of the Energy and Commerce Committee completed a successful knee-replacement surgery at the end of October, though it was unclear whether Tuesday’s trip to the hospital was related to that operation.

Last week, the House Democratic Caucus ousted Dingell from his chairmanship, voting to give the gavel to Rep. Henry Waxman (D-Calif.).