diff -Naur pokerth-1.1.2-rc.orig/src/net/common/serveracceptwebhelper.cpp pokerth-1.1.2-rc/src/net/common/serveracceptwebhelper.cpp
--- pokerth-1.1.2-rc.orig/src/net/common/serveracceptwebhelper.cpp	2017-08-16 14:24:03.000000000 +0200
+++ pokerth-1.1.2-rc/src/net/common/serveracceptwebhelper.cpp	2020-06-23 14:13:56.395204000 +0200
@@ -58,10 +58,10 @@
 
 	m_webSocketServer->init_asio(m_ioService.get());
 
-	m_webSocketServer->set_validate_handler(boost::bind(boost::mem_fn(&ServerAcceptWebHelper::validate), this, _1));
-	m_webSocketServer->set_open_handler(boost::bind(boost::mem_fn(&ServerAcceptWebHelper::on_open), this, _1));
-	m_webSocketServer->set_close_handler(boost::bind(boost::mem_fn(&ServerAcceptWebHelper::on_close), this, _1));
-	m_webSocketServer->set_message_handler(boost::bind(boost::mem_fn(&ServerAcceptWebHelper::on_message), this, _1, _2));
+	m_webSocketServer->set_validate_handler(boost::bind(boost::mem_fn(&ServerAcceptWebHelper::validate), this, boost::placeholders::_1));
+	m_webSocketServer->set_open_handler(boost::bind(boost::mem_fn(&ServerAcceptWebHelper::on_open), this, boost::placeholders::_1));
+	m_webSocketServer->set_close_handler(boost::bind(boost::mem_fn(&ServerAcceptWebHelper::on_close), this, boost::placeholders::_1));
+	m_webSocketServer->set_message_handler(boost::bind(boost::mem_fn(&ServerAcceptWebHelper::on_message), this, boost::placeholders::_1, boost::placeholders::_2));
 
 	m_webSocketServer->listen(serverPort);
 	m_webSocketServer->start_accept();