diff --git a/src/lib/base/Log.cpp b/src/lib/base/Log.cpp
index 823bf6d1..1252ed9f 100644
--- a/src/lib/base/Log.cpp
+++ b/src/lib/base/Log.cpp
@@ -63,9 +63,6 @@ Log::Log()
 {
     assert(s_log == NULL);
 
-    // create mutex for multithread safe operation
-    m_mutex = ARCH->newMutex();
-
     // other initalization
     m_maxPriority = g_defaultMaxPriority;
     m_maxNewlineLength = 0;
@@ -90,7 +87,6 @@ Log::~Log()
                                     index != m_alwaysOutputters.end(); ++index) {
         delete *index;
     }
-    ARCH->closeMutex(m_mutex);
 }
 
 Log*
@@ -214,7 +210,7 @@ Log::insert(ILogOutputter* outputter, bool alwaysAtHead)
 {
     assert(outputter != NULL);
 
-    ArchMutexLock lock(m_mutex);
+    std::lock_guard<std::mutex> lock(m_mutex);
     if (alwaysAtHead) {
         m_alwaysOutputters.push_front(outputter);
     }
@@ -237,7 +233,7 @@ Log::insert(ILogOutputter* outputter, bool alwaysAtHead)
 void
 Log::remove(ILogOutputter* outputter)
 {
-    ArchMutexLock lock(m_mutex);
+    std::lock_guard<std::mutex> lock(m_mutex);
     m_outputters.remove(outputter);
     m_alwaysOutputters.remove(outputter);
 }
@@ -245,7 +241,7 @@ Log::remove(ILogOutputter* outputter)
 void
 Log::pop_front(bool alwaysAtHead)
 {
-    ArchMutexLock lock(m_mutex);
+    std::lock_guard<std::mutex> lock(m_mutex);
     OutputterList* list = alwaysAtHead ? &m_alwaysOutputters : &m_outputters;
     if (!list->empty()) {
         delete list->front();
@@ -271,14 +267,14 @@ Log::setFilter(const char* maxPriority)
 void
 Log::setFilter(int maxPriority)
 {
-    ArchMutexLock lock(m_mutex);
+    std::lock_guard<std::mutex> lock(m_mutex);
     m_maxPriority = maxPriority;
 }
 
 int
 Log::getFilter() const
 {
-    ArchMutexLock lock(m_mutex);
+    std::lock_guard<std::mutex> lock(m_mutex);
     return m_maxPriority;
 }
 
@@ -289,7 +285,7 @@ Log::output(ELevel priority, char* msg)
     assert(msg != NULL);
     if (!msg) return;
 
-    ArchMutexLock lock(m_mutex);
+    std::lock_guard<std::mutex> lock(m_mutex);
 
     OutputterList::const_iterator i;
 
diff --git a/src/lib/base/Log.h b/src/lib/base/Log.h
index 1d09be22..0ed458f8 100644
--- a/src/lib/base/Log.h
+++ b/src/lib/base/Log.h
@@ -24,6 +24,7 @@
 #include "common/stdlist.h"
 
 #include <stdarg.h>
+#include <mutex>
 
 #define CLOG (Log::getInstance())
 #define BYE "\nTry `%s --help' for more information."
@@ -132,7 +133,7 @@ private:
 
     static Log*        s_log;
 
-    ArchMutex            m_mutex;
+    mutable std::mutex m_mutex;
     OutputterList        m_outputters;
     OutputterList        m_alwaysOutputters;
     int                    m_maxNewlineLength;