Sen. Rand Paul is taking his own message of fiscal conservatism to heart, returning about 17 percent of his Senate office budget to the U.S. Treasury.

“It’s the only budget I control,” Paul (R-Ky.) said on Wednesday at a news conference in Louisville, Ky., according to a Thursday report in The Courier-Journal, a Louisville-based publication. “It’s not enough, but it’s a start.”

Paul, who is set to return $600,000 from his $3.5 million office budget, has returned six-figure sums before.