diff --git a/code/lkm.c b/code/lkm.c
index 1733aeb0f..2de0f6d09 100644
--- a/code/lkm.c
+++ b/code/lkm.c
@@ -5,7 +5,6 @@
 #include <linux/module.h>
 #include <linux/proc_fs.h>
 #include <linux/uaccess.h>
-#include <stddef.h>
 
 #define DEVICE_NAME "lkm"
 #define CLASS_NAME  "lkmclass"