diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index 429e242..c95dca6 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -766,7 +766,7 @@
 	isdirectory()		check if a directory exists
 	getfsize()		get the size of a file
 	getcwd()		get the current working directory
-	haslocaldir()		check if current window used |:lcd|
+	haslocaldir()		check if current window used |:lcd| or |:tcd|
 	tempname()		get the name of a temporary file
 	mkdir()			create a new directory
 	delete()		delete a file