diff --git a/bridge-port-to-default b/bridge-port-to-default
index 7051f34..55d383a 100644
--- a/bridge-port-to-default
+++ b/bridge-port-to-default
@@ -11,7 +11,7 @@
 :global LogPrintExit;
 :global ParseKeyValueStore;
 
-:foreach BridgePort in=[ / interface bridge port find where comment~"." ] do={
+:foreach BridgePort in=[ / interface bridge port find where !(comment=[]) ] do={
   :local BridgePortVal [ / interface bridge port get $BridgePort ];
   :foreach Config,BridgeDefault in=[ $ParseKeyValueStore ($BridgePortVal->"comment") ] do={
     :if ($Config = $BridgePortTo) do={