McDonald's said sales at its established restaurants around the world rose 2.6 percent in May as it expanded offerings for late-night breakfasts, tweaked other menus and benefited from advertising value-priced meals.
Analysts polled by Consensus Metrix had expected a 1.9 percent rise in global sales at restaurants open at least 13 months.
McDonald's shares rose 2 percent to $100.50 in premarket trading on Monday.
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Sales at restaurants open at least 13 months rose 2.4 percent in the United States, while they rose 2 percent in Europe and 0.9 percent in the Asia/Pacific, Middle East and Africa (APMEA) region.