diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4d4e116..3122845 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -132,7 +132,6 @@ set(boost_log_sources
     src/bit_tools.hpp
     src/code_conversion.cpp
     src/stateless_allocator.hpp
-    src/unique_ptr.hpp
     src/core.cpp
     src/record_ostream.cpp
     src/severity_level.cpp
diff --git a/src/core.cpp b/src/core.cpp
index 1da9d30..40014bf 100644
--- a/src/core.cpp
+++ b/src/core.cpp
@@ -17,6 +17,7 @@
 #include <cstddef>
 #include <new>
 #include <chrono>
+#include <memory>
 #include <vector>
 #include <algorithm>
 #include <boost/cstdint.hpp>
@@ -44,7 +45,6 @@
 #include <boost/log/detail/light_rw_mutex.hpp>
 #include <boost/log/detail/thread_id.hpp>
 #endif
-#include "unique_ptr.hpp"
 #include "default_sink.hpp"
 #include "stateless_allocator.hpp"
 #include "alignment_gap_between.hpp"
@@ -282,7 +282,7 @@ public:
 
 #else
     //! Thread-specific data
-    log::aux::unique_ptr< thread_data > m_thread_data;
+    std::unique_ptr< thread_data > m_thread_data;
 #endif
 
     //! The global state of logging
@@ -427,7 +427,7 @@ private:
         BOOST_LOG_EXPR_IF_MT(scoped_write_lock lock(m_mutex);)
         if (!m_thread_data.get())
         {
-            log::aux::unique_ptr< thread_data > p(new thread_data());
+            std::unique_ptr< thread_data > p(new thread_data());
             m_thread_data.reset(p.get());
 #if defined(BOOST_LOG_USE_COMPILER_TLS)
             m_thread_data_cache = p.release();
diff --git a/src/named_scope.cpp b/src/named_scope.cpp
index 8121cbf..22c60f6 100644
--- a/src/named_scope.cpp
+++ b/src/named_scope.cpp
@@ -14,6 +14,7 @@
  */
 
 #include <boost/log/detail/config.hpp>
+#include <memory>
 #include <utility>
 #include <algorithm>
 #include <boost/type_index.hpp>
@@ -27,7 +28,6 @@
 #if !defined(BOOST_LOG_NO_THREADS)
 #include <boost/thread/tss.hpp>
 #endif
-#include "unique_ptr.hpp"
 #include <boost/log/detail/header.hpp>
 
 namespace boost {
@@ -153,7 +153,7 @@ struct BOOST_SYMBOL_VISIBLE named_scope::impl :
 
 #else
     //! Pointer to the scope stack
-    log::aux::unique_ptr< scope_list > pScopes;
+    std::unique_ptr< scope_list > pScopes;
 #endif
 
     //! The method returns current thread scope stack
@@ -166,7 +166,7 @@ struct BOOST_SYMBOL_VISIBLE named_scope::impl :
 #endif
         if (!p)
         {
-            log::aux::unique_ptr< scope_list > pNew(new scope_list());
+            std::unique_ptr< scope_list > pNew(new scope_list());
             pScopes.reset(pNew.get());
 #if defined(BOOST_LOG_USE_COMPILER_TLS)
             pScopesCache = p = pNew.release();
diff --git a/src/record_ostream.cpp b/src/record_ostream.cpp
index 27ed3d0..28f3e52 100644
--- a/src/record_ostream.cpp
+++ b/src/record_ostream.cpp
@@ -15,6 +15,7 @@
 
 #include <boost/log/detail/config.hpp>
 #include <locale>
+#include <memory>
 #include <utility>
 #include <boost/log/sources/record_ostream.hpp>
 #include <boost/log/detail/singleton.hpp>
@@ -23,7 +24,6 @@
 #if !defined(BOOST_LOG_NO_THREADS)
 #include <boost/thread/tss.hpp>
 #endif
-#include "unique_ptr.hpp"
 #include <boost/log/detail/header.hpp>
 
 namespace boost {
@@ -75,7 +75,7 @@ class stream_compound_pool :
 #if !defined(BOOST_LOG_NO_THREADS)
         thread_specific_ptr< stream_compound_pool< CharT > >
 #else
-        log::aux::unique_ptr< stream_compound_pool< CharT > >
+        std::unique_ptr< stream_compound_pool< CharT > >
 #endif
     >
 {
@@ -86,7 +86,7 @@ class stream_compound_pool :
     typedef thread_specific_ptr< this_type > tls_ptr_type;
 #else
     //! Thread-specific pointer type
-    typedef log::aux::unique_ptr< this_type > tls_ptr_type;
+    typedef std::unique_ptr< this_type > tls_ptr_type;
 #endif
     //! Singleton base type
     typedef log::aux::lazy_singleton<
@@ -117,7 +117,7 @@ public:
         this_type* p = ptr.get();
         if (!p)
         {
-            log::aux::unique_ptr< this_type > pNew(new this_type());
+            std::unique_ptr< this_type > pNew(new this_type());
             ptr.reset(pNew.get());
             p = pNew.release();
         }
diff --git a/src/severity_level.cpp b/src/severity_level.cpp
index 9ba01cc..21fdf58 100644
--- a/src/severity_level.cpp
+++ b/src/severity_level.cpp
@@ -14,6 +14,7 @@
  */
 
 #include <boost/log/detail/config.hpp>
+#include <memory>
 #include <boost/cstdint.hpp>
 #include <boost/log/sources/severity_feature.hpp>
 
@@ -22,7 +23,6 @@
 #include <boost/log/detail/singleton.hpp>
 #include <boost/log/detail/thread_specific.hpp>
 #endif
-#include "unique_ptr.hpp"
 #include <boost/log/detail/header.hpp>
 
 namespace boost {
@@ -61,7 +61,7 @@ BOOST_LOG_API uintmax_t& get_severity_level()
     uintmax_t* p = tss.get();
     if (BOOST_UNLIKELY(!p))
     {
-        log::aux::unique_ptr< uintmax_t > ptr(new uintmax_t(0));
+        std::unique_ptr< uintmax_t > ptr(new uintmax_t(0));
         tss.set(ptr.get());
         p = ptr.release();
         boost::this_thread::at_thread_exit([p]() { delete p; });
diff --git a/src/syslog_backend.cpp b/src/syslog_backend.cpp
index b93e574..8f383e1 100644
--- a/src/syslog_backend.cpp
+++ b/src/syslog_backend.cpp
@@ -18,6 +18,7 @@
 #ifndef BOOST_LOG_WITHOUT_SYSLOG
 
 #include <ctime>
+#include <memory>
 #include <algorithm>
 #include <stdexcept>
 #include <boost/limits.hpp>
@@ -45,7 +46,6 @@
 #if !defined(BOOST_LOG_NO_THREADS)
 #include <mutex>
 #endif
-#include "unique_ptr.hpp"
 
 #ifdef BOOST_LOG_USE_NATIVE_SYSLOG
 #include <syslog.h>
@@ -422,7 +422,7 @@ struct syslog_backend::implementation::udp_socket_based :
     //! Pointer to the list of sockets
     shared_ptr< syslog_udp_service > m_pService;
     //! Pointer to the socket being used
-    log::aux::unique_ptr< syslog_udp_socket > m_pSocket;
+    std::unique_ptr< syslog_udp_socket > m_pSocket;
     //! The target host to send packets to
     asio::ip::udp::endpoint m_TargetHost;
 
diff --git a/src/text_file_backend.cpp b/src/text_file_backend.cpp
index 1fb3a49..924f3cd 100644
--- a/src/text_file_backend.cpp
+++ b/src/text_file_backend.cpp
@@ -56,7 +56,6 @@
 #include <boost/log/attributes/time_traits.hpp>
 #include <boost/log/sinks/auto_newline_mode.hpp>
 #include <boost/log/sinks/text_file_backend.hpp>
-#include "unique_ptr.hpp"
 
 #if !defined(BOOST_LOG_NO_THREADS)
 #include <mutex>
diff --git a/src/unique_ptr.hpp b/src/unique_ptr.hpp
deleted file mode 100644
index 091bb9c..0000000
--- a/src/unique_ptr.hpp
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- *          Copyright Andrey Semashev 2007 - 2015.
- * Distributed under the Boost Software License, Version 1.0.
- *    (See accompanying file LICENSE_1_0.txt or copy at
- *          http://www.boost.org/LICENSE_1_0.txt)
- */
-/*!
- * \file   unique_ptr.hpp
- * \author Andrey Semashev
- * \date   18.07.2015
- *
- * \brief  This header is the Boost.Log library implementation, see the library documentation
- *         at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
- */
-
-#ifndef BOOST_LOG_UNIQUE_PTR_HPP_INCLUDED_
-#define BOOST_LOG_UNIQUE_PTR_HPP_INCLUDED_
-
-#include <boost/log/detail/config.hpp>
-
-#if !defined(BOOST_NO_CXX11_SMART_PTR)
-
-#include <memory>
-
-namespace boost {
-
-BOOST_LOG_OPEN_NAMESPACE
-
-namespace aux {
-
-using std::unique_ptr;
-
-} // namespace aux
-
-BOOST_LOG_CLOSE_NAMESPACE // namespace log
-
-} // namespace boost
-
-#else // !defined(BOOST_NO_CXX11_SMART_PTR)
-
-#include <boost/move/unique_ptr.hpp>
-
-namespace boost {
-
-BOOST_LOG_OPEN_NAMESPACE
-
-namespace aux {
-
-using boost::movelib::unique_ptr;
-
-} // namespace aux
-
-BOOST_LOG_CLOSE_NAMESPACE // namespace log
-
-} // namespace boost
-
-#endif // !defined(BOOST_NO_CXX11_SMART_PTR)
-
-#endif // BOOST_LOG_UNIQUE_PTR_HPP_INCLUDED_
diff --git a/src/windows/event_log_backend.cpp b/src/windows/event_log_backend.cpp
index 7515f8b..6f9d81c 100644
--- a/src/windows/event_log_backend.cpp
+++ b/src/windows/event_log_backend.cpp
@@ -17,6 +17,7 @@
 
 #ifndef BOOST_LOG_WITHOUT_EVENT_LOG
 
+#include <memory>
 #include <string>
 #include <vector>
 #include <ostream>
@@ -33,7 +34,6 @@
 #include <boost/log/utility/formatting_ostream.hpp>
 #include <windows.h>
 #include <psapi.h>
-#include "unique_ptr.hpp"
 #include "windows/event_log_registry.hpp"
 #include "windows/simple_event_log.h"
 #include <boost/log/detail/header.hpp>
@@ -262,7 +262,7 @@ BOOST_LOG_API void basic_simple_event_log_backend< CharT >::construct(
         aux::init_event_log_registry(log_name, source_name, reg_mode == event_log::forced, reg_params);
     }
 
-    log::aux::unique_ptr< implementation > p(new implementation());
+    std::unique_ptr< implementation > p(new implementation());
 
     const char_type* target_unc = NULL;
     if (!target.empty())
@@ -518,7 +518,7 @@ BOOST_LOG_API void basic_event_log_backend< CharT >::construct(
         aux::init_event_log_registry(log_name, source_name, reg_mode == event_log::forced, reg_params);
     }
 
-    log::aux::unique_ptr< implementation > p(new implementation());
+    std::unique_ptr< implementation > p(new implementation());
 
     const char_type* target_unc = NULL;
     if (!target.empty())
diff --git a/src/windows/ipc_sync_wrappers.cpp b/src/windows/ipc_sync_wrappers.cpp
index 77ec34b..6848809 100644
--- a/src/windows/ipc_sync_wrappers.cpp
+++ b/src/windows/ipc_sync_wrappers.cpp
@@ -26,6 +26,7 @@
 #include <windows.h> // for error codes
 #include <cstddef>
 #include <limits>
+#include <memory>
 #include <string>
 #include <utility>
 #include <boost/assert.hpp>
@@ -34,7 +35,6 @@
 #include <boost/memory_order.hpp>
 #include <boost/core/snprintf.hpp>
 #include <boost/atomic/atomic.hpp>
-#include "unique_ptr.hpp"
 #include "windows/ipc_sync_wrappers.hpp"
 #include <boost/log/detail/header.hpp>
 
@@ -413,7 +413,7 @@ interprocess_condition_variable::semaphore_info* interprocess_condition_variable
     {
         // We need to open the semaphore. It is possible that the semaphore does not exist because all processes that had it opened terminated.
         // Because of this we also attempt to create it.
-        boost::log::aux::unique_ptr< semaphore_info > p(new semaphore_info(id));
+        std::unique_ptr< semaphore_info > p(new semaphore_info(id));
         generate_semaphore_name(id);
         p->m_semaphore.create_or_open(m_semaphore_name.c_str(), m_perms);