diff --git a/ls.c b/ls.c
index 7de15ac..aa95fef 100644
--- a/ls.c
+++ b/ls.c
@@ -1,7 +1,7 @@
 /* See LICENSE file for copyright and license details. */
 #include <sys/stat.h>
 #include <sys/types.h>
-#ifdef __GLIBC__
+#ifndef major
 #include <sys/sysmacros.h>
 #endif
 
diff --git a/tar.c b/tar.c
index fb0df45..f9158c2 100644
--- a/tar.c
+++ b/tar.c
@@ -2,7 +2,7 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/types.h>
-#ifdef __GLIBC__
+#ifndef major
 #include <sys/sysmacros.h>
 #endif