diff --git a/include/boost/cstdint.hpp b/include/boost/cstdint.hpp
index ee55e69..750a120 100644
--- a/include/boost/cstdint.hpp
+++ b/include/boost/cstdint.hpp
@@ -137,7 +137,7 @@ namespace boost
 
 } // namespace boost
 
-#elif defined(__FreeBSD__) && (__FreeBSD__ <= 4) || defined(__osf__)
+#elif defined(__FreeBSD__) && (__FreeBSD__ <= 4) || defined(__osf__) || defined(__VMS)
 // FreeBSD and Tru64 have an <inttypes.h> that contains much of what we need.
 # include <inttypes.h>