diff --git a/packages/snjs/mocha/lib/factory.js b/packages/snjs/mocha/lib/factory.js
index f523877f1..81483cac9 100644
--- a/packages/snjs/mocha/lib/factory.js
+++ b/packages/snjs/mocha/lib/factory.js
@@ -122,7 +122,7 @@ export async function initializeApplication(application) {
 export function registerUserToApplication({ application, email, password, ephemeral, mergeLocal = true }) {
   if (!email) email = Utils.generateUuid()
   if (!password) password = Utils.generateUuid()
-  return application.register(email, password, ephemeral, mergeLocal)
+  return application.register(email, password, null, ephemeral, mergeLocal)
 }
 
 export async function setOldVersionPasscode({ application, passcode, version }) {
diff --git a/packages/snjs/mocha/mfa_service.test.js b/packages/snjs/mocha/mfa_service.test.js
index 6b1e68d75..0940388a5 100644
--- a/packages/snjs/mocha/mfa_service.test.js
+++ b/packages/snjs/mocha/mfa_service.test.js
@@ -11,7 +11,7 @@ const registerApp = async (application) => {
   const ephemeral = false
   const mergeLocal = true
 
-  await application.register(email, password, ephemeral, mergeLocal)
+  await application.register(email, password, null, ephemeral, mergeLocal)
   return application
 }