diff --git a/src/wp-includes/ms-files.php b/src/wp-includes/ms-files.php
index c909a32407..2efe452faf 100644
--- a/src/wp-includes/ms-files.php
+++ b/src/wp-includes/ms-files.php
@@ -18,7 +18,7 @@ if ( ! is_multisite() ) {
 
 ms_file_constants();
 
-if ( '1' == $current_blog->archived || '1' == $current_blog->spam || '1' == $current_blog->deleted ) {
+if ( '1' === $current_blog->archived || '1' === $current_blog->spam || '1' === $current_blog->deleted ) {
 	status_header( 404 );
 	die( '404 — File not found.' );
 }