diff --git a/lib/xapi-stdext-threads/threadext.mli b/lib/xapi-stdext-threads/threadext.mli
index 62bb50d8..8349ab71 100644
--- a/lib/xapi-stdext-threads/threadext.mli
+++ b/lib/xapi-stdext-threads/threadext.mli
@@ -23,13 +23,13 @@ module Delay : sig
   type t
 
   val make : unit -> t
+
+  val wait : t -> float -> bool
   (** Blocks the calling thread for a given period of time with the option of
       returning early if someone calls 'signal'. Returns true if the full time
       period elapsed and false if signalled. Note that multple 'signals' are
       coalesced; 'signals' sent before 'wait' is called are not lost. *)
 
-  val wait : t -> float -> bool
-  (** Sends a signal to a waiting thread. See 'wait' *)
-
   val signal : t -> unit
+  (** Sends a signal to a waiting thread. See 'wait' *)
 end