diff --git a/Documentation/git-read-tree.txt b/Documentation/git-read-tree.txt
index 8421d1fd78..c95ad9f145 100644
--- a/Documentation/git-read-tree.txt
+++ b/Documentation/git-read-tree.txt
@@ -50,6 +50,9 @@ OPTIONS
 	trees that are not directly related to the current
 	working tree status into a temporary index file.
 
+-v::
+	Show the progress of checking files out.
+
 --trivial::
 	Restrict three-way merge by `git-read-tree` to happen
 	only if there is no file-level merging required, instead