diff --git a/xymon/plugins/client/ext/smart b/xymon/plugins/client/ext/smart
index ffaec6e..7a46e64 100755
--- a/xymon/plugins/client/ext/smart
+++ b/xymon/plugins/client/ext/smart
@@ -13,7 +13,7 @@ while read LINE
 do
 	DISK=$(echo "${LINE}" | cut -d" " -f1)
 	TYPE=$(echo "${LINE}" | cut -d" " -f3)
-	DRES=`/usr/sbin/smartctl -H -d "${TYPE}" -n standby "${DISK}"`
+	DRES=$(/usr/sbin/smartctl -H -d "${TYPE}" -n standby "${DISK}")
 	DCODE=$?
 	DSTBY=$(( $DCODE & 2 ))
 	DFAIL=$(( $DCODE & 8 ))
@@ -42,15 +42,15 @@ do
 	echo "" >>/tmp/dres
 done < /tmp/dscan >/tmp/dcheck
 
-COLOR=`cat /tmp/dcheck | awk '{print $1}' | sort | uniq | head -1 | cut -c3-`
+COLOR=$(cat /tmp/dcheck | awk '{print $1}' | sort | uniq | head -1 | cut -c3-)
 
 $XYMON $XYMSRV "status ${MACHINE}.smart ${COLOR} SMART health check
 
-`cat /tmp/dcheck | cut -c2-`
+$(cat /tmp/dcheck | cut -c2-)
 
 ==================== Detailed status ====================
 
-`cat /tmp/dres`
+$(cat /tmp/dres)
 "
 
 rm -f /tmp/dres /tmp/dcheck /tmp/dscan