diff --git a/Boost/boost/thread/xtime.hpp b/Boost/boost/thread/xtime.hpp
index c05f1c76e..d1439e0da 100644
--- a/Boost/boost/thread/xtime.hpp
+++ b/Boost/boost/thread/xtime.hpp
@@ -20,7 +20,7 @@ namespace boost {
 
 enum xtime_clock_types
 {
-    TIME_UTC_=1
+    TIME_UTC=1
 //    TIME_TAI,
 //    TIME_MONOTONIC,
 //    TIME_PROCESS,
diff --git a/Boost/lib/pthread/timeconv.inl b/Boost/lib/pthread/timeconv.inl
index 7c07802cc..b75a1353b 100644
--- a/Boost/lib/pthread/timeconv.inl
+++ b/Boost/lib/pthread/timeconv.inl
@@ -20,8 +20,8 @@ const int NANOSECONDS_PER_MICROSECOND = 1000;
 inline void to_time(int milliseconds, boost::xtime& xt)
 {
     int res = 0;
-    res = boost::xtime_get(&xt, boost::TIME_UTC_);
-    BOOST_ASSERT(res == boost::TIME_UTC_);
+    res = boost::xtime_get(&xt, boost::TIME_UTC);
+    BOOST_ASSERT(res == boost::TIME_UTC);
 
     xt.sec += (milliseconds / MILLISECONDS_PER_SECOND);
     xt.nsec += ((milliseconds % MILLISECONDS_PER_SECOND) *
@@ -57,8 +57,8 @@ inline void to_timespec_duration(const boost::xtime& xt, timespec& ts)
 {
     boost::xtime cur;
     int res = 0;
-    res = boost::xtime_get(&cur, boost::TIME_UTC_);
-    BOOST_ASSERT(res == boost::TIME_UTC_);
+    res = boost::xtime_get(&cur, boost::TIME_UTC);
+    BOOST_ASSERT(res == boost::TIME_UTC);
 
     if (boost::xtime_cmp(xt, cur) <= 0)
     {
@@ -88,8 +88,8 @@ inline void to_duration(boost::xtime xt, int& milliseconds)
 {
     boost::xtime cur;
     int res = 0;
-    res = boost::xtime_get(&cur, boost::TIME_UTC_);
-    BOOST_ASSERT(res == boost::TIME_UTC_);
+    res = boost::xtime_get(&cur, boost::TIME_UTC);
+    BOOST_ASSERT(res == boost::TIME_UTC);
 
     if (boost::xtime_cmp(xt, cur) <= 0)
         milliseconds = 0;
@@ -110,8 +110,8 @@ inline void to_microduration(boost::xtime xt, int& microseconds)
 {
     boost::xtime cur;
     int res = 0;
-    res = boost::xtime_get(&cur, boost::TIME_UTC_);
-    BOOST_ASSERT(res == boost::TIME_UTC_);
+    res = boost::xtime_get(&cur, boost::TIME_UTC);
+    BOOST_ASSERT(res == boost::TIME_UTC);
 
     if (boost::xtime_cmp(xt, cur) <= 0)
         microseconds = 0;