diff --git a/lib/main.js b/lib/main.js
index 9d8c017..89322af 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -12,9 +12,7 @@ define(['moment', 'utils/router', 'leaflet', 'gui', 'helper', 'utils/language'],
         for (var i = 0; i < data.length; ++i) {
           nodes = nodes.concat(data[i].nodes);
           timestamp = data[i].timestamp;
-          links = links.concat(data[i].links.filter(function (d) {
-            return d.source !== undefined;
-          }));
+          links = links.concat(data[i].links);
         }
 
         nodes.forEach(function (node) {