diff --git a/xCAT-server/lib/xcat/plugins/updatenode.pm b/xCAT-server/lib/xcat/plugins/updatenode.pm
index 01c84e7ec..b273a0ba8 100644
--- a/xCAT-server/lib/xcat/plugins/updatenode.pm
+++ b/xCAT-server/lib/xcat/plugins/updatenode.pm
@@ -368,11 +368,12 @@ sub preprocess_updatenode
 
             foreach (@posts)
             {
-                if (!-e "$installdir/postscripts/$_")
+                my @aa=split(' ', $_);
+                if (!-e "$installdir/postscripts/$aa[0]")
                 {
                     my $rsp = {};
                     $rsp->{data}->[0] =
-                      "The postcript $installdir/postscripts/$_ does not exist.";
+                      "The postcript $installdir/postscripts/$aa[0] does not exist.";
                     $callback->($rsp);
                     return \@requests;
                 }