diff --git a/puppet/files/puppet-check b/puppet/files/puppet-check
index 5518d6e..73535f8 100755
--- a/puppet/files/puppet-check
+++ b/puppet/files/puppet-check
@@ -44,7 +44,11 @@ begin
     end
 
     # check if deadlock file is too old
-    dlock = Puppet.settings.value("puppetdlockfile")
+    if Puppet.version[/\d+/].to_i >= 3
+        dlock = Puppet.settings.value("agent_disabled_lockfile")
+    else
+        dlock = Puppet.settings.value("puppetdlockfile")
+    end
     if File.exists?(dlock) and Time.new - File.new(dlock).mtime > 43200
         err = "puppetd deadlock file is over 12 hours old, removing it and sending HUP to daemon\n"
         Syslog.warning err