diff --git a/xCAT/postscripts/ospkgs b/xCAT/postscripts/ospkgs
index e1a990c08..aaee34ac4 100755
--- a/xCAT/postscripts/ospkgs
+++ b/xCAT/postscripts/ospkgs
@@ -52,7 +52,7 @@ fi
 mounted=0;
 result=`mount |grep /install |grep $NFSSERVER`
 if [ $? -eq 0 ]; then
-    NFSSERVER=$INSTALLDIR
+    NFSSERVER="/install"
     mounted=1 
 fi
 
diff --git a/xCAT/postscripts/otherpkgs b/xCAT/postscripts/otherpkgs
index 640a6709e..11954d12f 100755
--- a/xCAT/postscripts/otherpkgs
+++ b/xCAT/postscripts/otherpkgs
@@ -52,7 +52,7 @@ fi
 mounted=0;
 result=`mount |grep /install |grep $NFSSERVER`
 if [ $? -eq 0 ]; then
-    NFSSERVER=$INSTALLDIR
+    NFSSERVER="/install"
     mounted=1 
 fi