diff --git a/dsmon.sh b/dsmon.sh
index 9740761..15d7ad7 100755
--- a/dsmon.sh
+++ b/dsmon.sh
@@ -135,7 +135,7 @@ CHECK(){
 				dname=${DRIVEINFO[${ii}]}
 				dname=${dname//\/dev\/mapper\//}
 				dname=${dname//\/dev\//}
-				dname_short=$(echo $dname | cut -d "vg-" -f2)
+				dname_short=${dname#*vg-}
 				[ "$dname_short" = "" ] && dname_short=$dname
 
 				if [ "${dname}" = "sda1" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then