diff --git a/wp-admin/ms-delete-site.php b/wp-admin/ms-delete-site.php
index b449803878..dd5da9dd6f 100644
--- a/wp-admin/ms-delete-site.php
+++ b/wp-admin/ms-delete-site.php
@@ -78,7 +78,15 @@ Webmaster
 	$content = str_replace( '###URL_DELETE###', $url_delete, $content );
 	$content = str_replace( '###SITE_NAME###', get_network()->site_name, $content );
 
-	wp_mail( get_option( 'admin_email' ), '[ ' . wp_specialchars_decode( get_option( 'blogname' ) ) . ' ] ' . __( 'Delete My Site' ), $content );
+	wp_mail(
+		get_option( 'admin_email' ),
+		sprintf(
+			/* translators: %s: Site title */
+			__( '[%s] Delete My Site' ),
+			wp_specialchars_decode( get_option( 'blogname' ) )
+		),
+		$content
+	);
 
 	if ( $switched_locale ) {
 		restore_previous_locale();
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 356126c6fa..6e5a5bc9b9 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45386';
+$wp_version = '5.3-alpha-45387';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.