diff --git a/include/boost/thread/win32/basic_recursive_mutex.hpp b/include/boost/thread/win32/basic_recursive_mutex.hpp
index e5f79981..d2b8e77d 100644
--- a/include/boost/thread/win32/basic_recursive_mutex.hpp
+++ b/include/boost/thread/win32/basic_recursive_mutex.hpp
@@ -56,6 +56,12 @@ namespace boost
                 long const current_thread_id=win32::GetCurrentThreadId();
                 return try_recursive_lock(current_thread_id) || try_timed_lock(current_thread_id,target);
             }
+            template<typename Duration>
+            bool timed_lock(Duration const& timeout)
+            {
+                return timed_lock(get_system_time()+timeout);
+            }
+
             long get_active_count()
             {
                 return mutex.get_active_count();
diff --git a/include/boost/thread/win32/basic_timed_mutex.hpp b/include/boost/thread/win32/basic_timed_mutex.hpp
index fef19d7b..8ee199df 100644
--- a/include/boost/thread/win32/basic_timed_mutex.hpp
+++ b/include/boost/thread/win32/basic_timed_mutex.hpp
@@ -104,6 +104,12 @@ namespace boost
                 return true;
             }
 
+            template<typename Duration>
+            bool timed_lock(Duration const& timeout)
+            {
+                return timed_lock(get_system_time()+timeout);
+            }
+
             long get_active_count()
             {
                 return ::boost::detail::interlocked_read_acquire(&active_count);
diff --git a/test/test_mutex.cpp b/test/test_mutex.cpp
index 5dae38ee..e85459c4 100644
--- a/test/test_mutex.cpp
+++ b/test/test_mutex.cpp
@@ -150,6 +150,17 @@ struct test_timedlock
         boost::system_time target = boost::get_system_time()+boost::posix_time::milliseconds(100);
         BOOST_CHECK(lock.timed_lock(target));
         BOOST_CHECK(lock ? true : false);
+        lock.unlock();
+        BOOST_CHECK(!lock);
+
+        BOOST_CHECK(mutex.timed_lock(boost::posix_time::milliseconds(100)));
+        mutex.unlock();
+
+        BOOST_CHECK(lock.timed_lock(boost::posix_time::milliseconds(100)));
+        BOOST_CHECK(lock ? true : false);
+        lock.unlock();
+        BOOST_CHECK(!lock);
+        
     }
 };