diff --git a/templates/single-product/add-to-cart/grouped.php b/templates/single-product/add-to-cart/grouped.php
index f7a5d9fe1dc..31b8a1556e8 100644
--- a/templates/single-product/add-to-cart/grouped.php
+++ b/templates/single-product/add-to-cart/grouped.php
@@ -21,7 +21,7 @@ global $product, $post;
 
 do_action( 'woocommerce_before_add_to_cart_form' ); ?>
 
-<form class="cart" action="<?php echo esc_url( get_permalink() ); ?>" method="post" enctype='multipart/form-data'>
+<form class="cart grouped_form" action="<?php echo esc_url( get_permalink() ); ?>" method="post" enctype='multipart/form-data'>
 	<table cellspacing="0" class="woocommerce-grouped-product-list group_table">
 		<tbody>
 			<?php