diff --git a/Installation/include/CGAL/config.h b/Installation/include/CGAL/config.h
index 9abad1bc6cf..ca5998b023c 100644
--- a/Installation/include/CGAL/config.h
+++ b/Installation/include/CGAL/config.h
@@ -118,6 +118,9 @@
 #if !defined(__GNUC__)
 #define CGAL_CFG_NO_STATEMENT_EXPRESSIONS 1
 #endif
+#if defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX) || (BOOST_VERSION < 104700)
+#define CGAL_CFG_NO_CPP0X_UNIFIED_INITIALIZATION_SYNTAX
+#endif 
 #if __cplusplus < 201103L && !(_MSC_VER >= 1600)
 #define CGAL_CFG_NO_CPP0X_COPY_N 1
 #define CGAL_CFG_NO_CPP0X_NEXT_PREV 1