diff --git a/src/wp-admin/includes/class-wp-ms-themes-list-table.php b/src/wp-admin/includes/class-wp-ms-themes-list-table.php
index 7f751a3b2f..de1b741234 100644
--- a/src/wp-admin/includes/class-wp-ms-themes-list-table.php
+++ b/src/wp-admin/includes/class-wp-ms-themes-list-table.php
@@ -301,7 +301,7 @@ class WP_MS_Themes_List_Table extends WP_List_Table {
 		$a = $theme_a[ $orderby ];
 		$b = $theme_b[ $orderby ];
 
-		if ( $a == $b ) {
+		if ( $a === $b ) {
 			return 0;
 		}