diff --git a/init.d/programming/common.el b/init.d/programming/common.el
index 465ee20..5a136ac 100644
--- a/init.d/programming/common.el
+++ b/init.d/programming/common.el
@@ -1,6 +1,6 @@
 ;;; common.el --- Common programming settings. -*- lexical-binding: t; -*-
 
-;; Time-stamp: <2020-12-05T10:55:12+0100>
+;; Time-stamp: <2020-12-05T15:53:29+0100>
 
 ;;; Commentary:
 
@@ -255,5 +255,9 @@ year if mode is derived from prog-mode."
   :config (put 'bug-reference-url-format 'safe-local-variable #'stringp)
   :hook (prog-mode . bug-reference-prog-mode))
 
+(use-package diff
+  :straight (:type built-in)
+  :hook (diff-mode . (lambda () (setq-local my/reformat-save nil))))
+
 (provide 'programming/common)
 ;;; common.el ends here