diff --git a/kernel/relay.c b/kernel/relay.c
index 5001c98..52d6a6f 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -227,7 +227,7 @@
  *	relay_remove_buf - remove a channel buffer
  *	@kref: target kernel reference that contains the relay buffer
  *
- *	Removes the file from the fileystem, which also frees the
+ *	Removes the file from the filesystem, which also frees the
  *	rchan_buf_struct and the channel buffer.  Should only be called from
  *	kref_put().
  */