diff --git a/include/boost/date_time/compiler_config.hpp b/include/boost/date_time/compiler_config.hpp
index 666e90a..b68ccd3 100644
--- a/include/boost/date_time/compiler_config.hpp
+++ b/include/boost/date_time/compiler_config.hpp
@@ -21,6 +21,10 @@
 #define BOOST_DATE_TIME_NO_MEMBER_INIT
 #endif
 
+
+// include these types before we try to re-define them
+#include "boost/cstdint.hpp"
+
 //Define INT64_C for some Metrowerks compilers
 #if (defined(__MWERKS__) && (!defined(INT64_C)))
 #define INT64_C(value)  long long(value)