[Haskell-beginners] How to select items from one list depending on another

Hi, I have this problem at hand - Given two lists list1 = [0,1,2,0,1,4] list2 = [1,2,3,4,5,6] I need to take items from the second list only when the corresponding item in list1 is non-zero. list3 = map snd $ filter takeValid $ zip list1 list2 where takeValid (a,b) = a /= 0 Is there a shorter way? -- Regards, Kashyap