diff --git a/sys/compat/linuxkpi/common/include/linux/mmzone.h b/sys/compat/linuxkpi/common/include/linux/mmzone.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/mmzone.h
@@ -0,0 +1,11 @@
+/* Public domain. */
+
+#ifndef _LINUX_MMZONE_H
+#define _LINUX_MMZONE_H
+
+#include <linux/mm_types.h>
+#include <linux/page-flags.h>
+
+#define MAX_ORDER	11
+
+#endif