diff --git a/xCAT-server/lib/xcat/plugins/sles.pm b/xCAT-server/lib/xcat/plugins/sles.pm
index 12d560770..164e6d46c 100644
--- a/xCAT-server/lib/xcat/plugins/sles.pm
+++ b/xCAT-server/lib/xcat/plugins/sles.pm
@@ -717,7 +717,7 @@ sub mknetboot
 
             my $mntoptions = $mntopts->{'mntopts'};
             if (defined($mntoptions)) {
-                $kcmdline .= "MNTOPTS=\'$mntoptions\'";
+                $kcmdline .= " MNTOPTS=$mntoptions";
             }
         }
         $bootparams->{$node}->[0]->{kernel} = "$rtftppath/kernel";