diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 48dae07..7063ebc 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -29,6 +29,7 @@
 #include <linux/utsname.h>
 #include <linux/capability.h>
 #include <linux/smp_lock.h>
+#include <linux/fs.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/kobject.h>
@@ -49,9 +50,6 @@
 #include <asm/uaccess.h>
 #include <asm/processor.h>
 
-extern int proc_nr_files(ctl_table *table, int write, struct file *filp,
-                     void __user *buffer, size_t *lenp, loff_t *ppos);
-
 #ifdef CONFIG_X86
 #include <asm/nmi.h>
 #include <asm/stacktrace.h>