diff --git a/doc/hook/send_notify_fail b/doc/hook/send_notify_fail
new file mode 100644
index 0000000..7f61bb4
--- /dev/null
+++ b/doc/hook/send_notify_fail
@@ -0,0 +1,34 @@
+SYNOPSIS
+        #include <sys/driver_hooks.h>
+
+        set_driver_hook(H_SEND_NOTIFY_FAIL, value)
+
+        <value> being:
+
+          void <name>(string msg, object msgobj, object orig_cmd_giver)
+          void <closure>(string msg, object msgobj, object orig_cmd_giver)
+
+DESCRIPTION
+        Optional hook to send the notify fail message, regardless
+        of how it was determined, to the player. If the hook is not
+        set, the message is delivered using tell_object() internally.
+        Hook setting can be a string or a closure.
+
+        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.
+
+        The arguments to the call are:
+         - <msg> is the notify fail message to be delivered.
+         - <msgobj> is the object which set the message. It is 0 for
+           the default message.
+         - <orig_cmd_giver> is the object for which the original
+           command was first received. It is usually identical with
+           the current command giver this_player().
+
+HISTORY
+
+SEE ALSO
+        hooks(C), command(H), modify_command(H), modify_command_fname(H),
+        notify_fail(H)