diff --git a/main.c b/main.c
index ca99723..8473fa4 100644
--- a/main.c
+++ b/main.c
@@ -13,6 +13,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include <sys/types.h>
 #include <unistd.h>
 
diff --git a/rootdev.c b/rootdev.c
index ce1a970..037140c 100644
--- a/rootdev.c
+++ b/rootdev.c
@@ -19,6 +19,7 @@
 #include <string.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include <sys/types.h>
 #include <sys/vfs.h>
 #include <unistd.h>