diff --git a/3rdParty/Boost/src/boost/asio/detail/kqueue_reactor.hpp b/3rdParty/Boost/src/boost/asio/detail/kqueue_reactor.hpp
index c1a6705..f33c985 100644
--- a/3rdParty/Boost/src/boost/asio/detail/kqueue_reactor.hpp
+++ b/3rdParty/Boost/src/boost/asio/detail/kqueue_reactor.hpp
@@ -206,7 +206,7 @@ public:
   // Cancel all operations associated with the given descriptor. The
   // handlers associated with the descriptor will be invoked with the
   // operation_aborted error.
-  void cancel_ops(socket_type descriptor, per_descriptor_data& descriptor_data)
+  void cancel_ops(socket_type /*descriptor*/, per_descriptor_data& descriptor_data)
   {
     mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);