diff --git a/debian/backupninja.preinst b/debian/backupninja.preinst
index 21596aaaa5bc1050a3e6e132cbbeae8776858921..7adc8edfc98640aaa8296898034880d318f41437 100644
--- a/debian/backupninja.preinst
+++ b/debian/backupninja.preinst
@@ -1,4 +1,5 @@
-#!/bin/sh -e
+#!/bin/sh
+set -e
 
 # Remove the erroneous /etc/logrotate.d/backupninja directory if it exists