diff --git a/resources/static/common/js/network.js b/resources/static/common/js/network.js
index ee7de6e0cbaeb01a0e44f7a05757a5a4bb70b0a5..e68780d920d925e08818777139536f32f629b6de 100644
--- a/resources/static/common/js/network.js
+++ b/resources/static/common/js/network.js
@@ -182,7 +182,6 @@ BrowserID.Network = (function() {
       post({
         url: "/wsapi/auth_with_assertion",
         data: {
-          email: email,
           assertion: assertion,
           ephemeral: !storage.usersComputer.confirmed(email)
         },