diff --git a/src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php b/src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php
index 91b21587b1..59cb3ed182 100644
--- a/src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php
+++ b/src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php
@@ -185,7 +185,7 @@ class WP_REST_Attachments_Controller extends WP_REST_Posts_Controller {
 			header( 'X-WP-Upload-Attachment-ID: ' . $attachment_id );
 		}
 
-		// Include admin function to get access to wp_generate_attachment_metadata().
+		// Include media functions to get access to wp_generate_attachment_metadata().
 		require_once ABSPATH . 'wp-admin/includes/media.php';
 
 		// Post-process the upload (create image sub-sizes, make PDF thumbnalis, etc.) and insert attachment meta.
@@ -717,7 +717,7 @@ class WP_REST_Attachments_Controller extends WP_REST_Posts_Controller {
 		// Get the content-type.
 		$type = array_shift( $headers['content_type'] );
 
-		/** Include admin functions to get access to wp_tempnam() and wp_handle_sideload(). */
+		// Include filesystem functions to get access to wp_tempnam() and wp_handle_sideload().
 		require_once ABSPATH . 'wp-admin/includes/file.php';
 
 		// Save the file.
@@ -915,7 +915,7 @@ class WP_REST_Attachments_Controller extends WP_REST_Posts_Controller {
 			return $size_check;
 		}
 
-		/** Include admin function to get access to wp_handle_upload(). */
+		// Include filesystem functions to get access to wp_handle_upload().
 		require_once ABSPATH . 'wp-admin/includes/file.php';
 
 		$file = wp_handle_upload( $files['file'], $overrides );
@@ -997,7 +997,7 @@ class WP_REST_Attachments_Controller extends WP_REST_Posts_Controller {
 			);
 		}
 
-		// Include admin function to get access to upload_is_user_over_quota().
+		// Include multisite admin functions to get access to upload_is_user_over_quota().
 		require_once ABSPATH . 'wp-admin/includes/ms.php';
 
 		if ( upload_is_user_over_quota( false ) ) {