diff --git a/src/Autoloader.php b/src/Autoloader.php
deleted file mode 100644
index 34b0884f911..00000000000
--- a/src/Autoloader.php
+++ /dev/null
@@ -1,70 +0,0 @@
-<?php
-/**
- * Custom Autoloader specifically for the REST API.
- *
- * This allows us to handle multiple versions (those registered, and the
- * version in core) so only classes from the latest version are used.
- *
- * Uses the class-map file generated by composer.
- *
- * @package WooCommerce/Rest_Api
- */
-
-namespace WooCommerce\Rest_Api;
-
-defined( 'ABSPATH' ) || exit;
-
-use WooCommerce\Rest_Api\Singleton;
-
-/**
- * Autoload class.
- */
-class Autoload {
-	use Singleton;
-
-	/**
-	 * Hook into WordPress ready to init the REST API as needed.
-	 */
-	public function init() {
-		spl_autoload_register( array( $this, 'autoload' ) );
-	}
-
-	/**
-	 * Class Autoloader.
-	 *
-	 * @param string $class Classname.
-	 */
-	public function autoload( $class ) {
-		$class = str_replace( '\\', DIRECTORY_SEPARATOR, str_replace( '\\' . __NAMESPACE__ . '\\', '', $class ) );
-		$file  = $this->get_file_name_from_class( $class );
-		$dir   = trailingslashit( dirname( __FILE__ ) );
-
-		// Non-namespaced files.
-		if ( stristr( $class, 'WC_REST_' ) ) {
-			if ( stristr( $class, 'WC_REST_Blocks' ) ) {
-				$subdir = 'wc-blocks/';
-			} elseif ( stristr( $class, '_V1_' ) ) {
-				$subdir = 'v1/';
-			} elseif ( stristr( $class, '_V2_' ) ) {
-				$subdir = 'v2/';
-			} else {
-				$subdir = 'v3/';
-			}
-
-			if ( file_exists( $dir . $subdir . $file ) ) {
-				include $dir . $subdir . $file;
-				return;
-			}
-		}
-
-		if ( file_exists( $dir . $class . '.php' ) ) {
-			include $dir . $class . '.php';
-			return;
-		}
-
-		if ( file_exists( $dir . $file ) ) {
-			include $dir . $file;
-			return;
-		}
-	}
-}
diff --git a/src/RestApi.php b/src/RestApi.php
index 345bad0f0d0..9090d54e35d 100644
--- a/src/RestApi.php
+++ b/src/RestApi.php
@@ -9,6 +9,10 @@ namespace WooCommerce;
 
 defined( 'ABSPATH' ) || exit;
 
+if ( file_exists( __DIR__ . '/../vendor/autoload.php' ) ) {
+	require __DIR__ . '/../vendor/autoload.php';
+}
+
 use WooCommerce\Utilities\SingletonTrait;
 
 /**
@@ -28,10 +32,6 @@ class RestApi {
 	 * Hook into WordPress ready to init the REST API as needed.
 	 */
 	public function init() {
-		// Get the autoloader for this version of the API.
-		if ( file_exists( __DIR__ . '/../vendor/autoload.php' ) ) {
-			require __DIR__ . '/../vendor/autoload.php';
-		}
 		add_action( 'rest_api_init', array( $this, 'register_rest_routes' ), 10 );
 	}