The retailer reported sales growth, especially in its e-commerce division, but also cautioned about economic uncertainty in the quarters ahead.

Walmart, the world’s largest retailer, warned that is not immune from President Donald Trump’s tariffs. It plans to raise prices on some items as Trump’s global trade war sends the company’s costs higher.

Volley after volley of tariffs — and at times on-again, off-again trade actions — have put companies around the world on edge. And a handful of major retailers have already raised prices across the U.