--- boost.module.orig	2009-10-29 11:11:46.000000000 +0100
+++ boost.module	2009-10-29 11:10:04.000000000 +0100
@@ -1363,7 +1363,7 @@
     $expire[] = $path;
 
     // Special front page feed handling
-    if (BOOST_CACHE_XML && ($path = '' || $path = '<front>')) {
+    if (BOOST_CACHE_XML && ($path == '' || $path == '<front>')) {
       $expire[] = 'rss.xml';
     }