#define CONTROL_STACK_ALIGNMENT_BYTES 8192 /* darwin wants page-aligned stacks */
#define THREAD_ALIGNMENT_BYTES CONTROL_STACK_ALIGNMENT_BYTES
#else
-#define THREAD_ALIGNMENT_BYTES BACKEND_PAGE_SIZE
+#define THREAD_ALIGNMENT_BYTES BACKEND_PAGE_BYTES
#define CONTROL_STACK_ALIGNMENT_BYTES 16
#endif