diff --git a/xCAT-server/lib/xcat/plugins/copycds.pm b/xCAT-server/lib/xcat/plugins/copycds.pm
index 8f58a7b28..053074014 100644
--- a/xCAT-server/lib/xcat/plugins/copycds.pm
+++ b/xCAT-server/lib/xcat/plugins/copycds.pm
@@ -61,7 +61,7 @@ sub process_request {
     'w|nonoverwrite' => \$nonoverwrite,
  );
   if ($help) {
-     $callback->({info=>"copycds [{-p|--path}=path] [{-n|--name|--osver}=distroname] [{-a|--arch}=architecture] [-i|--inspection] [{-o|--noosimage}] [{-w|--nonoverwrite}]1st.iso [2nd.iso ...]."});    
+     $callback->({info=>"copycds [{-p|--path}=path] [{-n|--name|--osver}=distroname] [{-a|--arch}=architecture] [-i|--inspection] [{-o|--noosimage}] [{-w|--nonoverwrite}] 1st.iso [2nd.iso ...]."});    
      return;
   }
   if ($arch and $arch =~ /i.86/) {