diff --git a/lib/router.js b/lib/router.js
index fcda67b..0064680 100644
--- a/lib/router.js
+++ b/lib/router.js
@@ -94,6 +94,8 @@ define(function () {
                       }
     self.addTarget = function (d) { targets.push(d) }
 
+    self.loadState = loadState
+
     self.setData = function (nodes, links) {
       objects.nodes = {}
       objects.links = {}