Active Low-Carber Forums - "Wheat Ingredients" in protein shake..?

Yeah this is probably a stupid question.. But I've never seen that term before on anything..
I was thinking of switching from Optimum Nutrition 100% whey to the Optimum Nutrition Pro Plex protein shake. Only 4 grams of carbs. But the 100% whey doesn't mention anything about wheat ingredients.. ?
Anything I should be concerned with that could stall me or anything?
Ingredients look fine though..

Ingredients: Multi-Protein Blend (Whey Protein Isolate [From Ion Exchange and Cross Flow Microfiltration] , UltraFiltered Whey Protein Concentrate, Egg Albumen, Hydrolyzed Whey Peptides), Cocoa, Natural & Artificial Flavor, Lecithin, Inulin, Vitamin/Mineral Blend (Ascorbic Acid, Chromium GTF Polynicotinate, d-Alpha Tocopheryl Succinate [Natural Vitamin E], diCalcium Phosphate, Biotin, Vitamin A Palmitate, Niacinamide, d-Calcium Pantothenate, Cholecalciferol, Folic Acid, Pyridoxine Hydrochloride, Riboflavin, Cyanocobalamin), Acesulfame Potassium, Salt, Sucralose (Splends Brand).
Warning: Allergen Information- Contains wheat ingredients. Manufacture in a plant that uses various seeds and nuts. Keep out of reach of children.