diff --git a/ls.c b/ls.c
index b716aba..7de15ac 100644
--- a/ls.c
+++ b/ls.c
@@ -1,6 +1,9 @@
 /* See LICENSE file for copyright and license details. */
 #include <sys/stat.h>
 #include <sys/types.h>
+#ifdef __GLIBC__
+#include <sys/sysmacros.h>
+#endif
 
 #include <dirent.h>
 #include <grp.h>
diff --git a/tar.c b/tar.c
index a6ead2e..fb0df45 100644
--- a/tar.c
+++ b/tar.c
@@ -1,6 +1,10 @@
 /* See LICENSE file for copyright and license details. */
 #include <sys/stat.h>
 #include <sys/time.h>
+#include <sys/types.h>
+#ifdef __GLIBC__
+#include <sys/sysmacros.h>
+#endif
 
 #include <errno.h>
 #include <fcntl.h>