diff --git a/openwrt/viwib-1-firmware-upgrade.sh b/openwrt/viwib-1-firmware-upgrade.sh
index 245f6ec..d864323 100755
--- a/openwrt/viwib-1-firmware-upgrade.sh
+++ b/openwrt/viwib-1-firmware-upgrade.sh
@@ -8,6 +8,7 @@ if [ $# -ne 1 ]; then
     exit 1
 fi
 
+set -e
 set -x
 
 viwib_ip=$1; shift