diff --git a/xCAT-server/lib/xcat/plugins/AAAusage.pm b/xCAT-server/lib/xcat/plugins/AAAusage.pm
index 0c6d876b9..f09afce69 100644
--- a/xCAT-server/lib/xcat/plugins/AAAusage.pm
+++ b/xCAT-server/lib/xcat/plugins/AAAusage.pm
@@ -56,7 +56,7 @@ sub preprocess_request {
   if (ref($extrargs)) {
     @exargs=@$extrargs;
   }
-  if (($#exargs==-1) or (($#exargs==0) and ($exargs[0] =~ /^\s*$/)) or (!$noderange and $command ne "lsslp")) {
+  if (($#exargs==-1) or (($#exargs==0) and ($exargs[0] =~ /^\s*$/)) and (!$noderange and $command ne "lsslp")) {
      $exargs[0] = "--help";  # force help if no args
   }