diff --git a/doc/hook/send_notify_fail b/doc/hook/send_notify_fail
index 7f61bb4..36222b3 100644
--- a/doc/hook/send_notify_fail
+++ b/doc/hook/send_notify_fail
@@ -16,8 +16,8 @@
 
         If the hook is a string, it is the name of a (possibly static)
         function to call in the current command giver. If the hook
-        is a closure, it is the function to be called. Lambda closures
-        are bound to the current command giver first.
+        is a closure, it is the function to be called. Unbound lambda
+        closures are bound to the current command giver first.
 
         The arguments to the call are:
          - <msg> is the notify fail message to be delivered.