diff --git a/Gruntfile.js b/Gruntfile.js
index 208e0384..06a5bfa8 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -36,6 +36,10 @@ module.exports = function(grunt) {
       },
       //TODO: Move errors back down?
       libtextsecure: {
+        options: {
+          banner: ";(function() {\n",
+          footer: "})();\n",
+        },
         src: [
           'libtextsecure/errors.js',
           'libtextsecure/libaxolotl.js',
diff --git a/js/libtextsecure.js b/js/libtextsecure.js
index 8e3bcc97..2ede60c5 100644
--- a/js/libtextsecure.js
+++ b/js/libtextsecure.js
@@ -1,3 +1,4 @@
+;(function() {
 /* vim: ts=4:sw=4:expandtab
  *
  * This program is free software: you can redistribute it and/or modify
@@ -39837,3 +39838,4 @@ window.textsecure.messaging = function() {
 
     return self;
 }();
+})();