diff --git a/includes/class-wc-shortcodes.php b/includes/class-wc-shortcodes.php
index 8352f68bf49..f2f93a0b158 100644
--- a/includes/class-wc-shortcodes.php
+++ b/includes/class-wc-shortcodes.php
@@ -779,7 +779,7 @@ class WC_Shortcodes {
 	 */
 	public static function related_products( $atts ) {
 		$atts = shortcode_atts( array(
-			'posts_per_page' => '4',
+			'per_page' => '4',
 			'columns'        => '4',
 			'orderby'        => 'rand'
 		), $atts );