--- kver.c.~1~	2012-11-26 23:31:44.000000000 +0000
+++ kver.c	2013-01-11 17:11:28.000000000 +0000
@@ -251,7 +251,7 @@
 	/* machine_arch is not in struct utsname, so get default from sysctl */
 	if (kver.machine_arch[0] == '\0') {
 		int mib[] = { CTL_HW, HW_MACHINE_ARCH, 0 };
-		int len = sizeof(kver.machine_arch);
+		size_t len = sizeof(kver.machine_arch);
 		int err;
 
 		err = _sysctl(mib, 2, kver.machine_arch, &len, NULL, 0);