diff --git a/openwrt/viwib-4-cleanup.sh b/openwrt/viwib-4-cleanup.sh
index 5ed6c95..8359c61 100755
--- a/openwrt/viwib-4-cleanup.sh
+++ b/openwrt/viwib-4-cleanup.sh
@@ -2,8 +2,6 @@
 # Nico Schottelius
 # 2020-06-14
 
-set -e
-set -x
 
 if [ $# -ne 2 ]; then
     echo "$0 viwib-ip-address viwib-id"
@@ -12,6 +10,9 @@ if [ $# -ne 2 ]; then
     exit 1
 fi
 
+set -e
+set -x
+
 viwib_ip=$1; shift
 
 id=$1; shift