diff --git a/code/controllers/GoogleSitemapController.php b/code/controllers/GoogleSitemapController.php
index 5482f3f..1cf4ba2 100644
--- a/code/controllers/GoogleSitemapController.php
+++ b/code/controllers/GoogleSitemapController.php
@@ -30,7 +30,7 @@ class GoogleSitemapController extends Controller {
 	 */
 	public function index($url) {
 		if(GoogleSitemap::enabled()) {
-			SSViewer::set_source_file_comments(false);
+			Config::inst()->update('SSViewer', 'set_source_file_comments', false);
 			
 			$this->getResponse()->addHeader('Content-Type', 'application/xml; charset="utf-8"');
 
@@ -56,7 +56,7 @@ class GoogleSitemapController extends Controller {
 		$page = $this->request->param('OtherID');
 
 		if(GoogleSitemap::enabled() && $class && $page) {
-			SSViewer::set_source_file_comments(false);
+			Config::inst()->update('SSViewer', 'set_source_file_comments', false);
 			
 			$this->getResponse()->addHeader('Content-Type', 'application/xml; charset="utf-8"');
 
@@ -70,4 +70,4 @@ class GoogleSitemapController extends Controller {
 			return new SS_HTTPResponse('Page not found', 404);
 		}
 	}
-}
\ No newline at end of file
+}