diff --git a/git/gitconfig.include b/git/gitconfig.include
index 6a4480b..00332cb 100644
--- a/git/gitconfig.include
+++ b/git/gitconfig.include
@@ -15,6 +15,8 @@
 	tool = vimdiff
 [merge]
 	tool = meld
+[mergetool]
+	keepBackup = false
 [credential]
 	helper = cache
 # vim: set filetype=gitconfig: