diff --git a/hotspot-to-wpa.rsc b/hotspot-to-wpa.rsc
index e2de112..d7aeb65 100644
--- a/hotspot-to-wpa.rsc
+++ b/hotspot-to-wpa.rsc
@@ -13,6 +13,9 @@
 :global EitherOr;
 :global LogPrintExit2;
 :global ParseKeyValueStore;
+:global ScriptLock;
+
+$ScriptLock $0;
 
 :local MacAddress $"mac-address";
 :local UserName $username;