diff --git a/src/Mutex.cpp b/src/Mutex.cpp
deleted file mode 100644
index 058b6ee9..00000000
--- a/src/Mutex.cpp
+++ /dev/null
@@ -1,102 +0,0 @@
-/**
-* Digital Voice Modem - Host Software
-* GPLv2 Open Source. Use is subject to license terms.
-* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-*
-* @package DVM / Host Software
-*
-*/
-//
-// Based on code from the MMDVMHost project. (https://github.com/g4klx/MMDVMHost)
-// Licensed under the GPLv2 License (https://opensource.org/licenses/GPL-2.0)
-//
-/*
-*   Copyright (C) 2015,2016 by Jonathan Naylor G4KLX
-*
-*   This program is free software; you can redistribute it and/or modify
-*   it under the terms of the GNU General Public License as published by
-*   the Free Software Foundation; either version 2 of the License, or
-*   (at your option) any later version.
-*
-*   This program is distributed in the hope that it will be useful,
-*   but WITHOUT ANY WARRANTY; without even the implied warranty of
-*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*   GNU General Public License for more details.
-*
-*   You should have received a copy of the GNU General Public License
-*   along with this program; if not, write to the Free Software
-*   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-#include "Mutex.h"
-
-// ---------------------------------------------------------------------------
-//  Public Class Members
-// ---------------------------------------------------------------------------
-
-#if defined(_WIN32) || defined(_WIN64)
-/// <summary>
-/// Initializes a new instance of the Mutex class.
-/// </summary>
-Mutex::Mutex() :
-    m_handle()
-{
-    m_handle = ::CreateMutex(NULL, FALSE, NULL);
-}
-
-/// <summary>
-/// Finalizes a instance of the Mutex class.
-/// </summary>
-Mutex::~Mutex()
-{
-    ::CloseHandle(m_handle);
-}
-
-/// <summary>
-/// Locks the mutex.
-/// </summary>
-void Mutex::lock()
-{
-    ::WaitForSingleObject(m_handle, INFINITE);
-}
-
-/// <summary>
-/// Unlocks the mutex.
-/// </summary>
-void Mutex::unlock()
-{
-    ::ReleaseMutex(m_handle);
-}
-#else
-/// <summary>
-/// Initializes a new instance of the Mutex class.
-/// </summary>
-Mutex::Mutex() :
-    m_mutex(PTHREAD_MUTEX_INITIALIZER)
-{
-    /* stub */
-}
-
-/// <summary>
-/// Finalizes a instance of the Mutex class.
-/// </summary>
-Mutex::~Mutex()
-{
-    /* stub */
-}
-
-/// <summary>
-/// Locks the mutex.
-/// </summary>
-void Mutex::lock()
-{
-    ::pthread_mutex_lock(&m_mutex);
-}
-
-/// <summary>
-/// Unlocks the mutex.
-/// </summary>
-void Mutex::unlock()
-{
-    ::pthread_mutex_unlock(&m_mutex);
-}
-#endif
diff --git a/src/Mutex.h b/src/Mutex.h
deleted file mode 100644
index b57d33c4..00000000
--- a/src/Mutex.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/**
-* Digital Voice Modem - Host Software
-* GPLv2 Open Source. Use is subject to license terms.
-* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-*
-* @package DVM / Host Software
-*
-*/
-//
-// Based on code from the MMDVMHost project. (https://github.com/g4klx/MMDVMHost)
-// Licensed under the GPLv2 License (https://opensource.org/licenses/GPL-2.0)
-//
-/*
-*   Copyright (C) 2015,2016 by Jonathan Naylor G4KLX
-*
-*   This program is free software; you can redistribute it and/or modify
-*   it under the terms of the GNU General Public License as published by
-*   the Free Software Foundation; either version 2 of the License, or
-*   (at your option) any later version.
-*
-*   This program is distributed in the hope that it will be useful,
-*   but WITHOUT ANY WARRANTY; without even the implied warranty of
-*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*   GNU General Public License for more details.
-*
-*   You should have received a copy of the GNU General Public License
-*   along with this program; if not, write to the Free Software
-*   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-#if !defined(__MUTEX_H__)
-#define __MUTEX_H__
-
-#include "Defines.h"
-
-#if defined(_WIN32) || defined(_WIN64)
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#else
-#include <pthread.h>
-#endif
-
-// ---------------------------------------------------------------------------
-//  Class Declaration
-//      Implements a simple mutual exclusion locking mechanism.
-// ---------------------------------------------------------------------------
-
-class HOST_SW_API Mutex {
-public:
-    /// <summary>Initializes a new instance of the Mutex class.</summary>
-    Mutex();
-    /// <summary>Finalizes a instance of the Mutex class.</summary>
-    ~Mutex();
-
-    /// <summary>Locks the mutex.</summary>
-    void lock();
-    /// <summary>Unlocks the mutex.</summary>
-    void unlock();
-
-private:
-#if defined(_WIN32) || defined(_WIN64)
-    HANDLE m_handle;
-#else
-    pthread_mutex_t m_mutex;
-#endif
-};
-
-#endif // __MUTEX_H__
diff --git a/src/lookups/IdenTableLookup.h b/src/lookups/IdenTableLookup.h
index 3013c6b2..f7bcad63 100644
--- a/src/lookups/IdenTableLookup.h
+++ b/src/lookups/IdenTableLookup.h
@@ -29,7 +29,6 @@
 #include "Defines.h"
 #include "lookups/LookupTable.h"
 #include "Thread.h"
-#include "Mutex.h"
 
 #include <string>
 #include <unordered_map>
diff --git a/src/lookups/LookupTable.h b/src/lookups/LookupTable.h
index cad2a162..e951f9a9 100644
--- a/src/lookups/LookupTable.h
+++ b/src/lookups/LookupTable.h
@@ -34,12 +34,12 @@
 #include "Log.h"
 #include "Thread.h"
 #include "Timer.h"
-#include "Mutex.h"
 
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
 #include <cctype>
+#include <mutex>
 #include <unordered_map>
 
 namespace lookups
@@ -155,7 +155,7 @@ namespace lookups
         std::string m_filename;
         uint32_t m_reloadTime;
         std::unordered_map<uint32_t, T> m_table;
-        Mutex m_mutex;
+        std::mutex m_mutex;
         bool m_stop;
 
         bool m_acl;
diff --git a/src/lookups/RadioIdLookup.h b/src/lookups/RadioIdLookup.h
index 152432ec..d909ff56 100644
--- a/src/lookups/RadioIdLookup.h
+++ b/src/lookups/RadioIdLookup.h
@@ -34,7 +34,6 @@
 #include "Defines.h"
 #include "lookups/LookupTable.h"
 #include "Thread.h"
-#include "Mutex.h"
 
 #include <string>
 #include <unordered_map>
diff --git a/src/lookups/TalkgroupIdLookup.h b/src/lookups/TalkgroupIdLookup.h
index ba1470d3..49d6c6db 100644
--- a/src/lookups/TalkgroupIdLookup.h
+++ b/src/lookups/TalkgroupIdLookup.h
@@ -34,7 +34,6 @@
 #include "Defines.h"
 #include "lookups/LookupTable.h"
 #include "Thread.h"
-#include "Mutex.h"
 
 #include <string>
 #include <unordered_map>