diff --git a/code/lkm.c b/code/lkm.c
index f63539906..25e1a8407 100644
--- a/code/lkm.c
+++ b/code/lkm.c
@@ -1,3 +1,4 @@
+#include <linux/device.h>
 #include <linux/fs.h>
 #include <linux/init.h>
 #include <linux/module.h>