diff --git a/wp-includes/author-template.php b/wp-includes/author-template.php
index 1e65baa1e6..1b6a948dc5 100644
--- a/wp-includes/author-template.php
+++ b/wp-includes/author-template.php
@@ -244,7 +244,7 @@ function get_author_posts_url($author_id, $author_nicename = '') {
*
optioncount (boolean) (false): Show the count in parenthesis next to the
* author's name.
* exclude_admin (boolean) (true): Exclude the 'admin' user that is
- * installed bydefault.
+ * installed by default.
* show_fullname (boolean) (false): Show their full names.
* hide_empty (boolean) (true): Don't show authors without any posts.
* feed (string) (''): If isn't empty, show links to author's feeds.