diff -ur a/lspnp.c b/lspnp.c
--- a/lspnp.c
+++ b/lspnp.c
@@ -28,6 +28,7 @@
 #include <endian.h>
 #include <ctype.h>
 #include <asm/types.h>
+#include <sys/types.h>
 
 #include "pnp_resource.h"
 
diff -ur a/setpnp.c b/setpnp.c
--- a/setpnp.c
+++ b/setpnp.c
@@ -40,6 +40,7 @@
 #include <endian.h>
 #include <ctype.h>
 #include <asm/types.h>
+#include <sys/types.h>
 
 #include "pnp_resource.h"