For example: (iter (for i in '(1 2 3 4)) (for c = (count i (list 234 234 2))) (collect c)) fails because CL:COUNT is shadowed by iterate and so i cant call the function from that scope. A workaround is: (iter (for i in '(1 2 3 4)) (for c = (funcall #'cl:count i (list 234 234 2))) (collect c)) But it is not nice to use this work-around. regards, msingh.