diff --git a/xCAT-server/lib/xcat/plugins/copycds.pm b/xCAT-server/lib/xcat/plugins/copycds.pm
index 191334786..9fb75072b 100644
--- a/xCAT-server/lib/xcat/plugins/copycds.pm
+++ b/xCAT-server/lib/xcat/plugins/copycds.pm
@@ -172,12 +172,12 @@ sub process_request {
 
             if ($path)
             {
-                
+
                 if(-e $path) {
                     $path=Cwd::realpath($path);
                 }
                 unless((substr($path,0,length("/install/")) eq "/install/") or ($path eq "/install")){
-                    $callback->({ warning => "copycds: the specified path \"$path\" is not a subdirectory under /install. Make sure this path is configured for httpd/apache, otherwise, the provisioning with this iso will fail!" }); 
+                    $callback->({ warning => "copycds: the specified path \"$path\" is not a subdirectory under /install. Make sure this path is configured for httpd/apache, otherwise, the provisioning with this iso will fail!" });
                 }
                 push @{ $newreq->{arg} }, ("-p", $path);
             }