diff --git a/netwerk/test/httpserver/httpd.js b/netwerk/test/httpserver/httpd.js
index c72e47f50b8..21d725280ec 100644
--- a/netwerk/test/httpserver/httpd.js
+++ b/netwerk/test/httpserver/httpd.js
@@ -2741,8 +2741,6 @@ ServerHandler.prototype =
         var sis = new ScriptableInputStream(fis);
         var s = Cu.Sandbox(gGlobalObject);
         s.importFunction(dump, "dump");
-        s.importFunction(atob, "atob");
-        s.importFunction(btoa, "btoa");
 
         // Define a basic key-value state-preservation API across requests, with
         // keys initially corresponding to the empty string.