diff --git a/openwrt/openwrt-wifi-with-ssh.sh b/openwrt/openwrt-wifi-with-ssh.sh
index 7f168ab..cdd502e 100755
--- a/openwrt/openwrt-wifi-with-ssh.sh
+++ b/openwrt/openwrt-wifi-with-ssh.sh
@@ -2,7 +2,7 @@
 # 2025-10-30, Nico Schottelius
 # Configure a device with a WAN port to allow ssh access and be IPv6 client
 
-if [ $# -ne 2 ]; then
+if [ $# -ne 4 ]; then
     echo "$0 ip-address ssid wifi-psk"
     echo "    ip-address: where to find the OpenWRT device"
     echo "    hostname: which hostname to set"