diff --git a/src/wp-includes/author-template.php b/src/wp-includes/author-template.php
index 2911366f03..e129e6f701 100644
--- a/src/wp-includes/author-template.php
+++ b/src/wp-includes/author-template.php
@@ -343,12 +343,13 @@ function the_author_posts_link( $deprecated = '' ) {
  */
 function get_author_posts_url( $author_id, $author_nicename = '' ) {
 	global $wp_rewrite;
-	$auth_ID = (int) $author_id;
-	$link    = $wp_rewrite->get_author_permastruct();
+
+	$author_id = (int) $author_id;
+	$link      = $wp_rewrite->get_author_permastruct();
 
 	if ( empty( $link ) ) {
 		$file = home_url( '/' );
-		$link = $file . '?author=' . $auth_ID;
+		$link = $file . '?author=' . $author_id;
 	} else {
 		if ( '' === $author_nicename ) {
 			$user = get_userdata( $author_id );