diff --git a/autoreply_editor/main.py b/autoreply_editor/main.py
index 167914a..9ca639a 100644
--- a/autoreply_editor/main.py
+++ b/autoreply_editor/main.py
@@ -168,7 +168,6 @@ def user_update(user):
         with fileinput.FileInput(
             get_qmailfile(user),
             inplace=True,
-            backup=".bak",
         ) as qmailfile:
             for line in qmailfile:
                 print(