diff --git a/runtime/doc/autocmd.txt b/runtime/doc/autocmd.txt
index ff05fe5..2b7b987 100644
--- a/runtime/doc/autocmd.txt
+++ b/runtime/doc/autocmd.txt
@@ -505,6 +505,8 @@
 CompleteDone			After Insert mode completion is done.  Either
 				when something was completed or abandoning
 				completion. |ins-completion|
+				The |v:completed_item| variable contains
+				information about the completed item.
 
 							*CursorHold*
 CursorHold			When the user doesn't press a key for the time