The Smithsonian said that it would update an exhibit at the National Museum of American History to reflect all impeachment proceedings in U.S. history after a placard was removed last month.

The Smithsonian clarified on Aug. 2 that aesthetic reasons were behind the removal of a placard with references to Trump in an impeachment display.

A placard referring to Trump’s two impeachments was removed in July, after the Smithsonian agreed to perform a “content review”