President José Raúl Mulino on Thursday denied a claim by the Trump administration that the Central American country had agreed to eliminate tolls for U.S. government ships using the Panama Canal, in an apparent setback to U.

Amid pressures from President Trump, Panama will “optimize transit priority” of U.S. Navy ships and will not renew its participation in China’s Belt and Road Initiative.

Navy use of the canal is infrequent, with about 40 vessels transiting annually, excluding the service’s aircraft carriers, which are too large. Allowing free access would reportedly save the U.S. about $13 million each year, according to the WSJ report.