diff --git a/mt.c b/mt.c
index 331b75b..bdbabfe 100644
--- a/mt.c
+++ b/mt.c
@@ -21,6 +21,7 @@
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <sys/utsname.h>
+#include <sys/sysmacros.h>
 
 #include "mtio.h"
 #include "version.h"
diff --git a/stinit.c b/stinit.c
index b4d60b9..830932b 100644
--- a/stinit.c
+++ b/stinit.c
@@ -16,6 +16,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <dirent.h>
+#include <limits.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 #include <sys/sysmacros.h>