thodg/got

diff --git a/tog/tog.1 b/tog/tog.1
index a6e5d2c..7bfae0a 100644
--- a/tog/tog.1
+++ b/tog/tog.1
@@ -184,7 +184,7 @@ If this directory is a
 .Xr got 1
 work tree, use the repository path associated with this work tree.
 .El
-.It Cm diff Oo Fl a Oc Oo Fl r Ar repository-path Oc Ar object1 object2
+.It Cm diff Oo Fl a Oc Oo Fl C Ar number Oc Oo Fl r Ar repository-path Oc Oo Fl w Oc Ar object1 Ar object2
 Display the differences between two objects in the repository.
 Treat each of the two arguments as a reference, a tag name, or an object
 ID SHA1 hash, and display differences between the corresponding objects.