diff --git a/nodemgmt-scripts.sh b/nodemgmt-scripts.sh
index e9c3a3a3..1d89c461 100755
--- a/nodemgmt-scripts.sh
+++ b/nodemgmt-scripts.sh
@@ -735,7 +735,7 @@ DOWNLIST(){
 }
 
 MAINTENANCE_MODE(){
-	if [ "${NM_NODETYPES[${1^^}]}" != "" ]; then
+	if [ "${1}" ] && [ "${NM_NODETYPES[${1^^}]}" != "" ]; then
 		ntss=${1^^}
 		ntypesel=(${ntss})
 		STATUS_ACTION=${2}