diff --git a/nodemgmt-scripts.sh b/nodemgmt-scripts.sh
index 0335f07b..c7c59d34 100755
--- a/nodemgmt-scripts.sh
+++ b/nodemgmt-scripts.sh
@@ -141,8 +141,10 @@ LISTCERTS(){
 		#	echo -e "Expiration Date:	${idsCL[Green]}$(date -d @${CERTEXPIRE} '+%m-%d-%Y')${idsCL[Default]}"
 		#fi
 		#echo ""
+		declare -i cw
+		declare -i spc1
 		cw=30
-		spc1=$(`expr ${cw}-${#SUBJECT}`)
+		spc1=${cw}-${#SUBJECT}
 		echo -e "${SUBJECT} ${spc1} $(date -d @${CERTEXPIRE} '+%m-%d-%Y')   ${SUBJECTNAMES}"
 		
 	done