diff --git a/src/WSServer.cpp b/src/WSServer.cpp
index 66559fc8..429c1cfa 100644
--- a/src/WSServer.cpp
+++ b/src/WSServer.cpp
@@ -43,8 +43,12 @@ using websocketpp::lib::bind;
 
 WSServer::WSServer()
 	: QObject(nullptr),
+#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
 	  _connections(),
 	  _clMutex(QMutex::Recursive)
+#else
+	  _connections()
+#endif
 {
 		_server.get_alog().clear_channels(websocketpp::log::alevel::frame_header | websocketpp::log::alevel::frame_payload | websocketpp::log::alevel::control);
 	_server.init_asio();
@@ -227,7 +231,7 @@ void WSServer::onMessage(connection_hdl hdl, server::message_ptr message)
 #if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
 	QtConcurrent::run(&_threadPool, [=]() {
 #else
-	_threadPool::run([=]() {
+	_threadPool.start([=]() {
 #endif
 		std::string payload = message->get_payload();
 
diff --git a/src/WSServer.h b/src/WSServer.h
index d8a4877d..d5d7e84e 100644
--- a/src/WSServer.h
+++ b/src/WSServer.h
@@ -21,7 +21,11 @@ with this program. If not, see <https://www.gnu.org/licenses/>
 #include <map>
 #include <set>
 #include <QObject>
+#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
 #include <QMutex>
+#else
+#include <QRecursiveMutex>
+#endif
 #include <QSharedPointer>
 #include <QVariantHash>
 #include <QThreadPool>
@@ -70,6 +74,11 @@ private:
 	bool _lockToIPv4;
 	std::set<connection_hdl, std::owner_less<connection_hdl>> _connections;
 	std::map<connection_hdl, ConnectionProperties, std::owner_less<connection_hdl>> _connectionProperties;
+#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
 	QMutex _clMutex;
+#else
+	QRecursiveMutex _clMutex;
+#endif
+
 	QThreadPool _threadPool;
 };