XC 90 whistles with open driver window

Have now my big one about 1 week. Since I do not open my passenger window during the temperaturs I have only come across it with a slight mistake today. I opened the window of the driver’s side at about 50 km/h half what was acknowledged to me with a loud whistle through the wind. Also in other positions 1/4, 3/4 etc. – loud whistle. Is this normal? Do you have this problem too? Greeting to Alle Xual (…who was not allowed to sell the elk sticker)