diff --git a/res/postinstall.sh b/res/postinstall.sh
index bedc64d..1e095ad 100644
--- a/res/postinstall.sh
+++ b/res/postinstall.sh
@@ -22,7 +22,8 @@ upgrade() {
 	systemctl daemon-reload ||:
 	echo "  Start/Restart systemd service unit"
 	systemctl try-restart $UNITNAME ||:
-	systemctl is-enabled $UNITNAME && systemctl start $UNITNAME ||:
+	systemctl is-enabled $UNITNAME >/dev/null && \
+		systemctl start $UNITNAME ||:
 }
 
 action="$1"
diff --git a/res/postremove.sh b/res/postremove.sh
index c01e5ac..89fa68e 100644
--- a/res/postremove.sh
+++ b/res/postremove.sh
@@ -5,7 +5,7 @@ UNITNAME=pveportal.service
 remove() {
 	echo "Running normal postremove:"
 	echo "  Stop systemd service unit"
-	systemctl stop $UNITNAME ||:
+	systemctl stop $UNITNAME 2>/dev/null ||:
 	echo "  Reload systemd service unit file"
 	systemctl daemon-reload ||:
 }