diff --git a/includes/class-wc-product-grouped.php b/includes/class-wc-product-grouped.php
index 4af12b12902..4ae862c1b9b 100644
--- a/includes/class-wc-product-grouped.php
+++ b/includes/class-wc-product-grouped.php
@@ -155,7 +155,7 @@ class WC_Product_Grouped extends WC_Product {
 			if ( $is_free ) {
 				$price = apply_filters( 'woocommerce_grouped_free_price_html', __( 'Free!', 'woocommerce' ), $this );
 			} else {
-				$price = apply_filters( 'woocommerce_grouped_price_html', $price . $this->get_price_suffix(), $this );
+				$price = apply_filters( 'woocommerce_grouped_price_html', $price . $this->get_price_suffix(), $this, $child_prices );
 			}
 		} else {
 			$price = apply_filters( 'woocommerce_grouped_empty_price_html', '', $this );