diff --git a/dsmon.sh b/dsmon.sh
index 9a967f8..8f46593 100755
--- a/dsmon.sh
+++ b/dsmon.sh
@@ -359,9 +359,11 @@ GETTSIP_NODE(){
 		hostname=$(hostname -f); hostname=${hostname,,}
 		([ "${hostname}" == "" ] || [[ "${hostname}" != *".scity"* ]]) && hostname=$(hostname) && hostname="${hostname,,}.ts.scity.us" || hostname=${hostname/.scity/.ts.scity}
 		echo "Tailscale running, TSIP: ${TSIP}"
-		echo -en "Updating DNS for '${hostname}' ... "
-		dyndns=$(/usr/bin/curl -s "https://systems:Dcs9613@ldns.scity.us/nic/update?hostname=${hostname}&myip=${TSIP}")
-		echo "Done (${dyndns})"
+		if [ "${NM_PDNS_USER}" != "" ]; then
+			echo -en "Updating DNS for '${hostname}' ... "
+			dyndns=$(/usr/bin/curl -s "https://${NM_PDNS_USER}:${NM_PDNS_PASS}@ldns.scity.us/nic/update?hostname=${hostname}&myip=${TSIP}")
+			echo "Done (${dyndns})"
+		fi
 	else
 		echo "Not running Tailscale"
 	fi