diff --git a/xCAT-server/lib/xcat/plugins/ddns.pm b/xCAT-server/lib/xcat/plugins/ddns.pm
index d2b5a9812..903c3aea5 100644
--- a/xCAT-server/lib/xcat/plugins/ddns.pm
+++ b/xCAT-server/lib/xcat/plugins/ddns.pm
@@ -595,7 +595,8 @@ sub process_request {
         } else {
             my $rsp;
             push @{ $rsp->{data} }, "emptyzonesenable from xCAT site table should be yes or no.";
-            xCAT::MsgUtils->message("E", $rsp, $callback); 
+            xCAT::MsgUtils->message("E", $rsp, $callback);
+            return; 
         }
     }
     my @slave_ips;