diff --git a/check-routeros-update.rsc b/check-routeros-update.rsc
index d77164d..0b621f7 100644
--- a/check-routeros-update.rsc
+++ b/check-routeros-update.rsc
@@ -41,7 +41,7 @@ $ScriptLock $0;
 
 $WaitFullyConnected;
 
-:if ([ :len [ /system/scheduler/find where name="\$RebootForUpdate" ] ] > 0) do={
+:if ([ :len [ /system/scheduler/find where name="_RebootForUpdate" ] ] > 0) do={
   :error "A reboot for update is already scheduled.";
 }