diff --git a/include/boost/config/platform/haiku.hpp b/include/boost/config/platform/haiku.hpp
index 7b296000..e3910d84 100644
--- a/include/boost/config/platform/haiku.hpp
+++ b/include/boost/config/platform/haiku.hpp
@@ -10,7 +10,6 @@
 #define BOOST_PLATFORM "Haiku"
 
 #define BOOST_HAS_UNISTD_H
-#define GLIBC_HAVE_LONG_LONG
 #define BOOST_HAS_STDINT_H
 #define BOOST_HASH_NO_EXTENSIONS