diff --git a/mode-customizations/sh-mode.el b/mode-customizations/sh-mode.el
index e0dab7c..617bc93 100644
--- a/mode-customizations/sh-mode.el
+++ b/mode-customizations/sh-mode.el
@@ -16,6 +16,7 @@
   (setq sh-basic-offset 2)
   (setq sh-indentation 2)
   (setq highlight-indentation-offset 2)
+  (setq whitespace-action (quote (auto-cleanup)))
   (highlight-indentation-mode)
  (define-key sh-mode-map (kbd "RET") 'reindent-then-newline-and-indent))