diff --git a/src/pthread/timeconv.inl b/src/pthread/timeconv.inl
index b75a1353..1c0a0cdc 100644
--- a/src/pthread/timeconv.inl
+++ b/src/pthread/timeconv.inl
@@ -21,7 +21,7 @@ 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);
+    BOOST_ASSERT(res == boost::TIME_UTC); (void)res;
 
     xt.sec += (milliseconds / MILLISECONDS_PER_SECOND);
     xt.nsec += ((milliseconds % MILLISECONDS_PER_SECOND) *
@@ -33,7 +33,6 @@ inline void to_time(int milliseconds, boost::xtime& xt)
         xt.nsec -= NANOSECONDS_PER_SECOND;
     }
 }
-
 #if defined(BOOST_HAS_PTHREADS)
 inline void to_timespec(const boost::xtime& xt, timespec& ts)
 {
@@ -58,7 +57,7 @@ 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);
+    BOOST_ASSERT(res == boost::TIME_UTC); (void)res;
 
     if (boost::xtime_cmp(xt, cur) <= 0)
     {
@@ -89,7 +88,7 @@ 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);
+    BOOST_ASSERT(res == boost::TIME_UTC); (void)res;
 
     if (boost::xtime_cmp(xt, cur) <= 0)
         milliseconds = 0;
@@ -111,7 +110,7 @@ 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);
+    BOOST_ASSERT(res == boost::TIME_UTC); (void)res;
 
     if (boost::xtime_cmp(xt, cur) <= 0)
         microseconds = 0;