diff --git a/src/globals/globals.js b/src/globals/globals.js
index 7fb1acffb..c9e91136b 100644
--- a/src/globals/globals.js
+++ b/src/globals/globals.js
@@ -1,10 +1,15 @@
-var Conf, E, c, d, doc, g;
+var Conf, E, c, d, doc, docSet, g;
 
 Conf = {};
 c    = console;
 d    = document;
 doc  = d.documentElement;
 
+// Workaround for userscript managers that run script before document.documentElement is set
+docSet = function() {
+  return (doc = d.documentElement);
+};
+
 g = {
   VERSION:   '<%= readJSON('/version.json').version %>',
   NAMESPACE: '<%= meta.name %>.',
diff --git a/src/main/Main.coffee b/src/main/Main.coffee
index 4440ec010..f18ace7f9 100644
--- a/src/main/Main.coffee
+++ b/src/main/Main.coffee
@@ -65,7 +65,7 @@ Main =
     items[key] = undefined for key of Conf
     items['previousversion'] = undefined
     $.get items, (items) ->
-      $.asap (-> doc = d.documentElement), ->
+      $.asap docSet, ->
 
         # Don't hide the local storage warning behind a settings panel.
         if $.cantSet