Index: lib/libc/gen/__xuname.c
===================================================================
--- lib/libc/gen/__xuname.c
+++ lib/libc/gen/__xuname.c
@@ -131,7 +131,7 @@
 		strlcpy(q, p, namesize);
 	else {
 		mib[0] = CTL_HW;
-		mib[1] = HW_MACHINE;
+		mib[1] = HW_MACHINE_ARCH;
 		len = namesize;
 		oerrno = errno;
 		if (sysctl(mib, 2, q, &len, NULL, 0) == -1) {