diff --git a/magit-key-mode.el b/magit-key-mode.el
index f9c0535d..baa5a7b2 100644
--- a/magit-key-mode.el
+++ b/magit-key-mode.el
@@ -167,6 +167,7 @@
       ("-f" "First parent" "--first-parent")
       ("-a" "All" "--all"))
      (arguments
+      ("-a" "Author" "--author" read-from-minibuffer)
       ("-g" "Grep" "--grep" read-from-minibuffer))))
   "Holds the key, help, function mapping for the log-mode. If you
   modify this make sure you reset `magit-key-mode-key-maps' to