diff --git a/Documentation/git-commit-tree.txt b/Documentation/git-commit-tree.txt
index ec15ee8d6f..2e2c581098 100644
--- a/Documentation/git-commit-tree.txt
+++ b/Documentation/git-commit-tree.txt
@@ -61,13 +61,11 @@ OPTIONS
 
 -S[<keyid>]::
 --gpg-sign[=<keyid>]::
+--no-gpg-sign::
 	GPG-sign commits. The `keyid` argument is optional and
 	defaults to the committer identity; if specified, it must be
-	stuck to the option without a space.
-
---no-gpg-sign::
-	Do not GPG-sign commit, to countermand a `--gpg-sign` option
-	given earlier on the command line.
+	stuck to the option without a space. `--no-gpg-sign` is useful to
+	countermand a `--gpg-sign` option given earlier on the command line.
 
 Commit Information
 ------------------