diff --git a/xCAT-server/lib/xcat/plugins/vsmppxe.pm b/xCAT-server/lib/xcat/plugins/vsmppxe.pm
index aa22a24ed..d05fb2243 100644
--- a/xCAT-server/lib/xcat/plugins/vsmppxe.pm
+++ b/xCAT-server/lib/xcat/plugins/vsmppxe.pm
@@ -500,7 +500,7 @@ sub process_request {
         nodes  --- a pointer to an array of nodes
         states -- a pointer to a hash table. This hash will be filled by this
              function. The key is the nodeset status and the value is a pointer
-             to an array of nodes. 
+             to an array of nodes.
     Returns:
        (return code, error message)
 =cut