Walmart’s first quarter profit slipped and it said it must raise prices due to higher costs from tariffs implemented by Donald Trump.

The nation’s largest retailers posted strong quarterly sales Thursday and said it expects sales growth of 3.5% to 4.5% in the second quarter.

Like many other U.S. companies, however, it did not issue a profit outlook for the quarter because of the chaotic environment, with stated U.S. tariff policies changing constantly. The company maintained its full year guidance issued in February.