diff --git a/deps/ox/src/ox/std/new.hpp b/deps/ox/src/ox/std/new.hpp
index 5dd41540..c242f4da 100644
--- a/deps/ox/src/ox/std/new.hpp
+++ b/deps/ox/src/ox/std/new.hpp
@@ -15,7 +15,7 @@
 #if defined(_MSC_VER)
 #include <malloc.h>
 #define ox_alloca(size) _alloca(size)
-#elif __has_include(<alloca.h>)
+#elif OX_USE_STDLIB
 #include <alloca.h>
 #define ox_alloca(size) alloca(size)
 #else