diff --git a/includes/legacy/class-wc-legacy-api.php b/includes/legacy/class-wc-legacy-api.php
index 1025abfb90a..2c1000dd3c7 100644
--- a/includes/legacy/class-wc-legacy-api.php
+++ b/includes/legacy/class-wc-legacy-api.php
@@ -128,23 +128,23 @@ class WC_Legacy_API {
 	public function includes() {
 
 		// API server / response handlers.
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-exception.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-server.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/interface-wc-api-handler.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-json-handler.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-exception.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-server.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/interface-wc-api-handler.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-json-handler.php' );
 
 		// Authentication.
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-authentication.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-authentication.php' );
 		$this->authentication = new WC_API_Authentication();
 
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-resource.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-coupons.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-customers.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-orders.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-products.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-reports.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-taxes.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v3/class-wc-api-webhooks.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-resource.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-coupons.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-customers.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-orders.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-products.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-reports.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-taxes.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v3/class-wc-api-webhooks.php' );
 
 		// Allow plugins to load other response handlers or resource classes.
 		do_action( 'woocommerce_api_loaded' );
@@ -186,20 +186,20 @@ class WC_Legacy_API {
 	private function handle_v1_rest_api_request() {
 
 		// Include legacy required files for v1 REST API request.
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/class-wc-api-server.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/interface-wc-api-handler.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/class-wc-api-json-handler.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/class-wc-api-xml-handler.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/class-wc-api-server.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/interface-wc-api-handler.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/class-wc-api-json-handler.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/class-wc-api-xml-handler.php' );
 
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/class-wc-api-authentication.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/class-wc-api-authentication.php' );
 		$this->authentication = new WC_API_Authentication();
 
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/class-wc-api-resource.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/class-wc-api-coupons.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/class-wc-api-customers.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/class-wc-api-orders.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/class-wc-api-products.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v1/class-wc-api-reports.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/class-wc-api-resource.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/class-wc-api-coupons.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/class-wc-api-customers.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/class-wc-api-orders.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/class-wc-api-products.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v1/class-wc-api-reports.php' );
 
 		// Allow plugins to load other response handlers or resource classes.
 		do_action( 'woocommerce_api_loaded' );
@@ -232,21 +232,21 @@ class WC_Legacy_API {
 	 * @deprecated 2.6.0
 	 */
 	private function handle_v2_rest_api_request() {
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-exception.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-server.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/interface-wc-api-handler.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-json-handler.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-exception.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-server.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/interface-wc-api-handler.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-json-handler.php' );
 
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-authentication.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-authentication.php' );
 		$this->authentication = new WC_API_Authentication();
 
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-resource.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-coupons.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-customers.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-orders.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-products.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-reports.php' );
-		include_once( dirname( __FILE__ ) . '/api/legacy/v2/class-wc-api-webhooks.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-resource.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-coupons.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-customers.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-orders.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-products.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-reports.php' );
+		include_once( dirname( __FILE__ ) . '/../api/legacy/v2/class-wc-api-webhooks.php' );
 
 		// allow plugins to load other response handlers or resource classes.
 		do_action( 'woocommerce_api_loaded' );