diff --git a/common/content/dactyl.js b/common/content/dactyl.js
index 15cad187..f83d5525 100644
--- a/common/content/dactyl.js
+++ b/common/content/dactyl.js
@@ -1596,7 +1596,7 @@ var Dactyl = Module("dactyl", XPCOM(Ci.nsISupportsWeakReference, ModuleBase), {
             function (args) {
                 if (dactyl.has("tabs") && tabs.remove(tabs.getTab(), 1, false))
                     return;
-                else if (dactyl.windows.size > 1)
+                else if (dactyl.windows.length > 1)
                     window.close();
                 else
                     dactyl.quit(false, args.bang);
diff --git a/common/modules/main.jsm b/common/modules/main.jsm
index 6043d5e4..31df62fd 100644
--- a/common/modules/main.jsm
+++ b/common/modules/main.jsm
@@ -124,6 +124,8 @@ var Modules = function Modules(window) {
 
         get document() window.document,
 
+        get navigator() window.navigator,
+
         window: window,
 
         Module: Module,