NEW YORK (MarketWatch) -- McDonald's Corp. /zigman2/quotes/203508018/composite MCD -1.02% said Monday its second-quarter profit rose to $1.4 billion, or $1.38 a share, from $1.35 billion, or $1.32 a share, a year earlier. Sales rose 2% to $7.08 billion from $6.92 billion in the year-ago period. Analysts polled by FactSet had expected earnings of $1.40 a share on sales of $7.08 billion. The fast-food chain said global same-store sales rose 1% in the quarter, but that figure is expected to be "relatively" flat for July. Don Thompson, president and chief executive officer, said he expects the results for the rest of 2013 "to remain challenged." Shares of McDonald's fell more than 2% in premarket trade.