diff --git a/include/boost/thread/future.hpp b/include/boost/thread/future.hpp
index 557d96c0..44da4367 100644
--- a/include/boost/thread/future.hpp
+++ b/include/boost/thread/future.hpp
@@ -484,7 +484,7 @@ namespace boost
             void mark_finished_with_result(rvalue_source_type result_)
             {
                 boost::lock_guard<boost::mutex> lock(mutex);
-                mark_finished_with_result_internal(result_);
+                mark_finished_with_result_internal(static_cast<rvalue_source_type>(result_));
             }
 
             move_dest_type get()
diff --git a/test/test_6174.cpp b/test/test_6174.cpp
index a6b6761e..cd7ed4e7 100644
--- a/test/test_6174.cpp
+++ b/test/test_6174.cpp
@@ -1,3 +1,8 @@
+// Copyright (C) 2010 Vicente Botet
+//
+//  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)
+
 
 
 #include <boost/thread.hpp>
@@ -16,13 +21,21 @@ private:
 public:
     MovableButNonCopyable() {};
     MovableButNonCopyable(MovableButNonCopyable&&) {};
-    MovableButNonCopyable& operator=(MovableButNonCopyable&&) {
+    MovableButNonCopyable& operator=(MovableButNonCopyable&&)
+    {
       return *this;
     };
 };
+
+MovableButNonCopyable construct()
+{
+  return MovableButNonCopyable();
+}
+
 int main()
 {
-    boost::packaged_task<MovableButNonCopyable>(MovableButNonCopyable());
+    boost::packaged_task<MovableButNonCopyable> pt(construct);
+    pt();
     return 0;
 }
 #else