diff --git a/debian/scripts/postinst b/debian/scripts/postinst
index e8e01098..bece4c38 100755
--- a/debian/scripts/postinst
+++ b/debian/scripts/postinst
@@ -1,4 +1,5 @@
-#!/bin/sh -e
+#!/bin/sh
+set -e
 
 KRILL_CONF="/etc/krill.conf"
 KRILL_HOME="/var/lib/krill/"
diff --git a/debian/scripts/postrm b/debian/scripts/postrm
index e9c084cf..cc544754 100644
--- a/debian/scripts/postrm
+++ b/debian/scripts/postrm
@@ -1,4 +1,5 @@
-#!/bin/sh -e
+#!/bin/sh
+set -e
 
 KRILL_CONF="/etc/krill.conf"
 
diff --git a/debian/scripts/prerm b/debian/scripts/prerm
index 12a24fa2..720364f6 100755
--- a/debian/scripts/prerm
+++ b/debian/scripts/prerm
@@ -1,4 +1,5 @@
-#!/bin/sh -e
+#!/bin/sh
+set -e
 
 # lintian warns maintainer-script-calls-systemctl.
 # at https://lintian.debian.org/tags/maintainer-script-calls-systemctl.html it