diff --git a/vim/.vim/after/ftplugin/haskell.vim b/vim/.vim/after/ftplugin/haskell.vim
index 89307b7..80d7f2e 100644
--- a/vim/.vim/after/ftplugin/haskell.vim
+++ b/vim/.vim/after/ftplugin/haskell.vim
@@ -24,3 +24,7 @@ let b:undo_ftplugin.='|unlet! b:ale_haskell_ghc_options'
 " Automatically format files when saving them
 let b:ale_fix_on_save=1
 let b:undo_ftplugin='|unlet! b:ale_lint_on_save'
+
+" Change max length of a line to 100 for this buffer to match official guidelines
+setlocal colorcolumn=100
+let b:undo_ftplugin.='|setlocal colorcolumn<'