diff --git a/ui/src/api/index.js b/ui/src/api/index.js
index 40569310932..6c4818ae805 100644
--- a/ui/src/api/index.js
+++ b/ui/src/api/index.js
@@ -42,7 +42,7 @@ export function api (command, args = {}, method = 'GET', data = {}) {
 export function login (arg) {
   const params = new URLSearchParams()
   params.append('command', 'login')
-  params.append('username', arg.username)
+  params.append('username', arg.username || arg.email)
   params.append('password', arg.password)
   params.append('domain', arg.domain)
   params.append('response', 'json')