diff --git a/fs/namespace.c b/fs/namespace.c
index 6ede3a5..66d921e 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -24,12 +24,11 @@
 #include <linux/namei.h>
 #include <linux/security.h>
 #include <linux/mount.h>
+#include <linux/ramfs.h>
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
 #include "pnode.h"
 
-extern int __init init_rootfs(void);
-
 /* spinlock for vfsmount related operations, inplace of dcache_lock */
 __cacheline_aligned_in_smp DEFINE_SPINLOCK(vfsmount_lock);