1 files changed, 1 insertions, 1 deletions
diff --git a/lib/monitor.rb b/lib/monitor.rb
index b556747577..4d31dca41a 100644
--- a/lib/monitor.rb
+++ b/lib/monitor.rb
@@ -145,7 +145,7 @@ module MonitorMixin
   #
   def mon_try_enter
     if @mon_owner != Thread.current
-      unless @mon_owner.trylock
+      unless @mon_mutex.try_lock
         return false
       end
       @mon_owner = Thread.current