diff --git a/runtime/doc/insert.txt b/runtime/doc/insert.txt
index 1caf084..18b40f7 100644
--- a/runtime/doc/insert.txt
+++ b/runtime/doc/insert.txt
@@ -640,6 +640,8 @@
 12. Spelling suggestions				|i_CTRL-X_s|
 13. keywords in 'complete'				|i_CTRL-N| |i_CTRL-P|
 
+Additionally, |i_CTRL-X_CTRL-Z| stops completion without changing the text.
+
 All these, except CTRL-N and CTRL-P, are done in CTRL-X mode.  This is a
 sub-mode of Insert and Replace modes.  You enter CTRL-X mode by typing CTRL-X
 and one of the CTRL-X commands.  You exit CTRL-X mode by typing a key that is
@@ -1042,6 +1044,12 @@
 			other contexts unless a double CTRL-X is used.
 
 
+Stop completion						*compl-stop*
+
+							*i_CTRL-X_CTRL-Z*
+CTRL-X CTRL-Z		Stop completion without changing the text.
+
+
 FUNCTIONS FOR FINDING COMPLETIONS			*complete-functions*
 
 This applies to 'completefunc' and 'omnifunc'.