diff --git a/include/libtorrent/aux_/aligned_union.hpp b/include/libtorrent/aux_/aligned_union.hpp
index 0864b08357..9a9b4a6f81 100644
--- a/include/libtorrent/aux_/aligned_union.hpp
+++ b/include/libtorrent/aux_/aligned_union.hpp
@@ -38,8 +38,6 @@ POSSIBILITY OF SUCH DAMAGE.
 
 namespace libtorrent { namespace aux {
 
-#if __cplusplus >= 202302L || defined __GNUC__ && __GNUC__ < 5 && !defined(_LIBCPP_VERSION)
-
 constexpr std::size_t max(std::size_t a)
 { return a; }
 
@@ -62,12 +60,6 @@ struct aligned_union
 	};
 };
 
-#else
-
-using std::aligned_union;
-
-#endif
-
 }}
 
 #endif