diff --git a/common/bootstrap.js b/common/bootstrap.js
index 91a97c1c..a5b25deb 100755
--- a/common/bootstrap.js
+++ b/common/bootstrap.js
@@ -134,7 +134,7 @@ let JSMLoader = {
                     return this.modules[name] = this.globals[uri];
 
                 this.globals[uri] = this.modules[name];
-                bootstrap_jsm.loadSubScript(url, this.modules[name]);
+                bootstrap_jsm.loadSubScript(url, this.modules[name], "UTF-8");
                 return;
             }
             catch (e) {
diff --git a/common/modules/util.jsm b/common/modules/util.jsm
index 56a59398..a0d0f090 100644
--- a/common/modules/util.jsm
+++ b/common/modules/util.jsm
@@ -749,7 +749,7 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
      *
      * @returns {XMLHttpRequest}
      */
-    httpGet: function httpGet(url, params, self) {
+    httpGet: function httpGet(url, params={}, self) {
         if (callable(params))
             // Deprecated.
             params = { callback: params.bind(self) };