diff --git a/runtime/doc/autocmd.txt b/runtime/doc/autocmd.txt
index b2d1c24..b4b064c 100644
--- a/runtime/doc/autocmd.txt
+++ b/runtime/doc/autocmd.txt
@@ -1,4 +1,4 @@
-*autocmd.txt*   For Vim version 8.0.  Last change: 2017 Apr 07
+*autocmd.txt*   For Vim version 8.0.  Last change: 2017 Jul 14
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -651,7 +651,8 @@
 				pattern is matched against the filetype.
 				<afile> can be used for the name of the file
 				where this option was set, and <amatch> for
-				the new value of 'filetype'.
+				the new value of 'filetype'.  Navigating to
+				another window or buffer is not allowed.
 				See |filetypes|.
 							*FileWriteCmd*
 FileWriteCmd			Before writing to a file, when not writing the