diff --git a/debian/frr.postrm b/debian/frr.postrm
index c553abd..e24a6ac 100755
--- a/debian/frr.postrm
+++ b/debian/frr.postrm
@@ -1,15 +1,26 @@
 #!/bin/sh
+
 set -e
 
-rm -f /etc/frr/.pkg.frr.nointegrated
+case "${1}" in
+	purge)
+		rm -f /etc/frr/.pkg.frr.nointegrated
+		rmdir /etc/frr > /dev/null 2>&1 || true
 
-if [ "$1" = "purge" ]; then
-	rm -rf /run/frr || true
-	rm -rf /var/lib/frr || true
+		rm -rf /run/frr
+		rm -rf /var/lib/frr
+		;;
 
-	# "purge" does not remove logfiles.  therefore we shouldn't delete
-	# the "frr" user/group since that would leave files with "dangling"
-	# ownership.
-fi
+	remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
+
+		;;
+
+	*)
+		echo "postrm called with unknown argument \`${1}'" >&2
+		exit 1
+		;;
+esac
 
 #DEBHELPER#
+
+exit 0