Docs typo

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 13da8774284d247d59f26d423e6de3e97ff12a3e..65bd5f7030c0c46d15db8704d9b881e2a002cb52 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -3812,7 +3812,7 @@ by Exim in conjunction with the &%-MC%& option. It signifies that the
 connection to the remote host has been authenticated.
 
 .vitem &%-MCD%&
-.oindex "&%-MCAD&"
+.oindex "&%-MCD%&"
 This option is not intended for use by external callers. It is used internally
 by Exim in conjunction with the &%-MC%& option. It signifies that the
 remote host supports the ESMTP &_DSN_& extension.