diff --git a/xCAT/postscripts/ospkgs b/xCAT/postscripts/ospkgs
index 40d34d3c0..9f126c099 100755
--- a/xCAT/postscripts/ospkgs
+++ b/xCAT/postscripts/ospkgs
@@ -210,7 +210,7 @@ fi
 
 #check if /install is mounted on the server, we may need to add code to conver NFSSERVER to ip 
 mounted=0;
-result=`mount |grep /install |grep $NFSSERVER`
+result=`mount |grep " $INSTALLDIR " |grep $NFSSERVER`
 if [ $? -eq 0 ]; then
     NFSSERVER="/install"
     mounted=1