diff --git a/nodemgmt-scripts.sh b/nodemgmt-scripts.sh
index 06aa8065..3932886f 100755
--- a/nodemgmt-scripts.sh
+++ b/nodemgmt-scripts.sh
@@ -609,7 +609,7 @@ LISTCERTS(){
 		CERTEXPIRE=$(date -d "$(: | ${NCMD} openssl x509 -in ${certdir}cert.pem -text | grep 'Not After' |awk '{print $4,$5,$7}')" '+%s');
 
 		# SUBJECTNAMES=${SUBJECTNAMES//$'\n'/, }
-		SUBJECTNAMES=$(echo $SUBJECTNAMES | sed "s/\n/, /g")
+		SUBJECTNAMES=$(echo $SUBJECTNAMES | sed "s/$'\n'/, /g")
 		SUBJECTNAMES=$(echo $SUBJECTNAMES | sed "s/${SUBJECT}, //g")
 		SUBJECTNAMES=$(echo $SUBJECTNAMES | sed "s/, ${SUBJECT}//g")
 		SUBJECTNAMES=$(echo $SUBJECTNAMES | sed "s/${SUBJECT}//g")