Index: load-styles.php
===================================================================
--- load-styles.php	(revision 46888)
+++ load-styles.php	(working copy)
@@ -37,7 +37,7 @@
 	exit;
 }
 
-$rtl            = ( isset( $_GET['dir'] ) && 'rtl' == $_GET['dir'] );
+$rtl            = ( isset( $_GET['dir'] ) && 'rtl' === $_GET['dir'] );
 $expires_offset = 31536000; // 1 year
 $out            = '';