Treasury Secretary Jack Lew said Thursday that the financial market’s resilience in the face of Britain’s vote to leave the European Union is proof that the Dodd-Frank financial reform law has “without question” made the banking system safer and sounder.

Britain’s vote caused a huge overnight spike in the dollar and sent stocks plummeting. But the market quickly bounced back, and Lew said that was “fresh evidence that Wall Street Reform is working and that with deeper capital, greater transparency and detailed resolution plans, it can withstand far greater shocks than before the crisis.”