Haskell -- problem with pretty-printing a list

Question

I'm new to haskell, and i read through and digested Learn You A Haskell For Great Good, trying out a couple of things along the way. For my first project i wanted to try the classic: FizzBuzz. So i came up with the following code:

import System.IO

fizzBuzz :: (Integral a) => a -> String
fizzBuzz num
    | fizz && buzz = "FizzBuzz"
    | fizz = "Fizz"
    | buzz = "Buzz"
    | otherwise = show num
    where fizz = num `mod` 3 == 0
          buzz = num `mod` 5 == 0

main = print $ map fizzBuzz [1..100]

Worked great, except i got a rather dense looking list that was hard to read. So i tried this main function instead:

main = map putStrLn $ map fizzBuzz [1..100]

And that gives me the error Couldn't match expected type 'IO t' against inferred type '[IO ()]'. I tried half a dozen things and none of it seemed to help. What's the proper way to do what i'm trying to do?