diff --git a/wp-includes/classes.php b/wp-includes/classes.php
index 08f194cb0c..c596e04d6b 100644
--- a/wp-includes/classes.php
+++ b/wp-includes/classes.php
@@ -245,7 +245,8 @@ class WP {
 			@header("ETag: $wp_etag");
 
 			// Support for Conditional GET
-			if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
+			if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) 
+				$client_etag = stripslashes(stripslashes($_SERVER['HTTP_IF_NONE_MATCH']));
 			else $client_etag = false;
 
 			$client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);