diff --git a/perl-xCAT/xCAT/CFMUtils.pm b/perl-xCAT/xCAT/CFMUtils.pm
index c6cbfb144..efe2761c0 100644
--- a/perl-xCAT/xCAT/CFMUtils.pm
+++ b/perl-xCAT/xCAT/CFMUtils.pm
@@ -642,7 +642,7 @@ sub getPreOSpkgsList {
         while (<$pkglistfp>)
         {
             my $line = xCAT::CFMUtils->trim($_);
-            if (($line =~ /^#/) || ($line =~ /^\s*$/ ))
+            if (($line =~ /^#/) || ($line =~ /^\s*$/ ) || ($line =~ /^@/))
             { #comment line or blank line
                 next;
             } else