diff --git a/tests/unit-tests/api/orders.php b/tests/unit-tests/api/orders.php
index a13e31932f3..dcedb963518 100644
--- a/tests/unit-tests/api/orders.php
+++ b/tests/unit-tests/api/orders.php
@@ -333,12 +333,15 @@ class WC_Tests_API_Orders extends WC_REST_Unit_Test_Case {
 	/**
 	 * Tests updating an order and adding a coupon.
 	 *
-	 * @since 3.0.0
+	 * @since 3.3.0
 	 */
 	public function test_update_order_add_coupons() {
 		wp_set_current_user( $this->user );
 		$order = WC_Helper_Order::create_order();
-
+		$order_item = current( $order->get_items() );
+		$coupon = WC_Helper_Coupon::create_coupon( 'fake-coupon' );
+		$coupon->set_amount( 5 );
+		$coupon->save();
 		$request = new WP_REST_Request( 'PUT', '/wc/v2/orders/' . $order->get_id() );
 		$request->set_body_params( array(
 			'coupon_lines' => array(
@@ -348,6 +351,13 @@ class WC_Tests_API_Orders extends WC_REST_Unit_Test_Case {
 					'discount_tax'   => '0',
 				),
 			),
+			'line_items' => array(
+				array(
+					'id' => $order_item->get_id(),
+					'product_id' => $order_item->get_product_id(),
+					'total' => '35.00',
+				),
+			),
 		) );
 		$response = $this->server->dispatch( $request );
 		$data     = $response->get_data();
@@ -362,11 +372,12 @@ class WC_Tests_API_Orders extends WC_REST_Unit_Test_Case {
 	/**
 	 * Tests updating an order and removing a coupon.
 	 *
-	 * @since 3.0.0
+	 * @since 3.3.0
 	 */
 	public function test_update_order_remove_coupons() {
 		wp_set_current_user( $this->user );
 		$order  = WC_Helper_Order::create_order();
+		$order_item = current( $order->get_items() );
 		$coupon = WC_Helper_Coupon::create_coupon( 'fake-coupon' );
 		$coupon->set_amount( 5 );
 		$coupon->save();
@@ -387,6 +398,13 @@ class WC_Tests_API_Orders extends WC_REST_Unit_Test_Case {
 					'code' => null,
 				),
 			),
+			'line_items' => array(
+				array(
+					'id' => $order_item->get_id(),
+					'product_id' => $order_item->get_product_id(),
+					'total' => '40.00',
+				),
+			),
 		) );
 		$response = $this->server->dispatch( $request );
 		$data     = $response->get_data();