Try running haddock on this: module HaddockBug where { -- |The 'square' function squares an integer. square :: Int -> Int; square x = x * x; } $ haddock -B /usr/lib/ghc-6.8.2/ HaddockBug.hs HaddockBug.hs:4:0: parse error on input `square' haddock: Failed to load all needed modules It works fine if you remove the haddock comment... -- Ashley Yakeley Seattle, WA