diff --git a/libraries/common_syndication_parser.inc b/libraries/common_syndication_parser.inc
index f3698e0..1c419a5 100644
--- a/libraries/common_syndication_parser.inc
+++ b/libraries/common_syndication_parser.inc
@@ -177,7 +177,7 @@ function _parser_common_syndication_atom10_parse($feed_XML) {
       $item['timestamp'] = _parser_common_syndication_parse_date("{$news->updated}");
     }
 
-    $item['guid'] = $news->id;
+    $item['guid'] = (string) $news->id;
 
     $item['url'] = _parser_common_syndication_link($news->link);
 
@@ -217,6 +217,7 @@ function _parser_common_syndication_atom10_parse($feed_XML) {
     $item['domains'] = isset($additional_taxonomies['ATOM Domains']) ? $additional_taxonomies['ATOM Domains'] : array();
     $parsed_source['items'][] = $item;
   }
+
   return $parsed_source;
 }