diff --git a/include/boost/integer_traits.hpp b/include/boost/integer_traits.hpp
index a96fc37..ef6ec51 100644
--- a/include/boost/integer_traits.hpp
+++ b/include/boost/integer_traits.hpp
@@ -100,6 +100,7 @@ class integer_traits<wchar_t>
     || (defined(__OpenBSD__) && defined(__GNUC__))\
     || (defined(__NetBSD__) && defined(__GNUC__))\
     || (defined(__FreeBSD__) && defined(__GNUC__))\
+    || (defined(__DragonFly__) && defined(__GNUC__))\
     || (defined(__hpux) && defined(__GNUC__) && (__GNUC__ == 3) && !defined(__SGI_STL_PORT))
     // No WCHAR_MIN and WCHAR_MAX, wchar_t has the same range as int.
     //  - SGI MIPSpro with native library