diff --git a/haskell-cabal.el b/haskell-cabal.el
index c0707009..4f2ab579 100644
--- a/haskell-cabal.el
+++ b/haskell-cabal.el
@@ -175,7 +175,7 @@ it from list if one of the following conditions are hold:
   (add-hook 'change-major-mode-hook 'haskell-cabal-unregister-buffer nil 'local)
   (add-hook 'kill-buffer-hook 'haskell-cabal-unregister-buffer nil 'local)
   (setq-local comment-start "-- ")
-  (setq-local comment-start-skip "\\(^[ \t]*\\)--[ \t]*")
+  (setq-local comment-start-skip "--[ \t]*")
   (setq-local comment-end "")
   (setq-local comment-end-skip "[ \t]*\\(\\s>\\|\n\\)")
   (setq-local indent-line-function 'haskell-cabal-indent-line)