diff --git a/includes/ServiceWiring.php b/includes/ServiceWiring.php
index cccb5e733ff..0b5288ee5f6 100644
--- a/includes/ServiceWiring.php
+++ b/includes/ServiceWiring.php
@@ -428,6 +428,7 @@ return [
 	},
 
 	'ResourceLoader' => function ( MediaWikiServices $services ) : ResourceLoader {
+		global $IP;
 		$config = $services->getMainConfig();
 
 		$rl = new ResourceLoader(
@@ -435,6 +436,7 @@ return [
 			LoggerFactory::getInstance( 'resourceloader' )
 		);
 		$rl->addSource( $config->get( 'ResourceLoaderSources' ) );
+		$rl->register( include "$IP/resources/Resources.php" );
 
 		return $rl;
 	},
diff --git a/includes/resourceloader/ResourceLoader.php b/includes/resourceloader/ResourceLoader.php
index 4cf87350ddb..b8569d45152 100644
--- a/includes/resourceloader/ResourceLoader.php
+++ b/includes/resourceloader/ResourceLoader.php
@@ -240,8 +240,6 @@ class ResourceLoader implements LoggerAwareInterface {
 	 * @param LoggerInterface|null $logger [optional]
 	 */
 	public function __construct( Config $config = null, LoggerInterface $logger = null ) {
-		global $IP;
-
 		$this->logger = $logger ?: new NullLogger();
 
 		if ( !$config ) {
@@ -254,8 +252,9 @@ class ResourceLoader implements LoggerAwareInterface {
 		// Add 'local' source first
 		$this->addSource( 'local', $config->get( 'LoadScript' ) );
 
-		// Register core modules
-		$this->register( include "$IP/resources/Resources.php" );
+		// Special module that always exists
+		$this->register( 'startup', [ 'class' => ResourceLoaderStartUpModule::class ] );
+
 		// Register extension modules
 		$this->register( $config->get( 'ResourceModules' ) );
 
diff --git a/resources/Resources.php b/resources/Resources.php
index af40b731d90..cde47217b66 100644
--- a/resources/Resources.php
+++ b/resources/Resources.php
@@ -27,12 +27,6 @@ if ( !defined( 'MEDIAWIKI' ) ) {
 global $wgResourceBasePath;
 
 return [
-
-	/**
-	 * Special modules who have their own classes
-	 */
-	'startup' => [ 'class' => ResourceLoaderStartUpModule::class ],
-
 	// Scripts managed by the local wiki (stored in the MediaWiki namespace)
 	'site' => [ 'class' => ResourceLoaderSiteModule::class ],
 	'site.styles' => [ 'class' => ResourceLoaderSiteStylesModule::class ],