diff --git a/wp-includes/load.php b/wp-includes/load.php
index 812569305a..ffbc1d2290 100644
--- a/wp-includes/load.php
+++ b/wp-includes/load.php
@@ -415,7 +415,7 @@ function timer_stop( $display = 0, $precision = 3 ) {
  * When `WP_DEBUG_LOG` is true, errors will be logged to `wp-content/debug.log`.
  * When `WP_DEBUG_LOG` is a valid path, errors will be logged to the specified file.
  *
- * Errors are never displayed for XML-RPC, REST, and Ajax requests.
+ * Errors are never displayed for XML-RPC, REST, `ms-files.php`, and Ajax requests.
  *
  * @since 3.0.0
  * @since 5.1.0 `WP_DEBUG_LOG` can be a file path.
@@ -481,7 +481,10 @@ function wp_debug_mode() {
 		error_reporting( E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR );
 	}
 
-	if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || ( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) || wp_doing_ajax() || wp_is_json_request() ) {
+	if (
+		defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || defined( 'MS_FILES_REQUEST' ) ||
+		( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) ||
+		wp_doing_ajax() || wp_is_json_request() ) {
 		ini_set( 'display_errors', 0 );
 	}
 }
diff --git a/wp-includes/ms-files.php b/wp-includes/ms-files.php
index 03af0843f7..6fb7e4d276 100644
--- a/wp-includes/ms-files.php
+++ b/wp-includes/ms-files.php
@@ -8,6 +8,7 @@
  * @subpackage Multisite
  */
 
+define( 'MS_FILES_REQUEST', true );
 define( 'SHORTINIT', true );
 require_once dirname( __DIR__ ) . '/wp-load.php';
 
@@ -17,8 +18,6 @@ if ( ! is_multisite() ) {
 
 ms_file_constants();
 
-error_reporting( 0 );
-
 if ( '1' == $current_blog->archived || '1' == $current_blog->spam || '1' == $current_blog->deleted ) {
 	status_header( 404 );
 	die( '404 — File not found.' );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index c35920478c..32b23916c7 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51356';
+$wp_version = '5.9-alpha-51358';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.