diff --git a/tests/admin_widgets/tests.py b/tests/admin_widgets/tests.py
index 46f2d2a76e5..ce1ef0eb7d2 100644
--- a/tests/admin_widgets/tests.py
+++ b/tests/admin_widgets/tests.py
@@ -1256,6 +1256,7 @@ class RelatedFieldWidgetSeleniumFirefoxTests(SeleniumDataMixin, AdminSeleniumWeb
         self.selenium.find_element_by_id('add_id_user').click()
         self.wait_for_popup()
         self.selenium.switch_to.window('id_user')
+        self.wait_for('#id_password')
         password_field = self.selenium.find_element_by_id('id_password')
         password_field.send_keys('password')
 
@@ -1274,6 +1275,7 @@ class RelatedFieldWidgetSeleniumFirefoxTests(SeleniumDataMixin, AdminSeleniumWeb
         self.wait_for_popup()
         self.selenium.switch_to.window('id_user')
 
+        self.wait_for('#id_username')
         username_field = self.selenium.find_element_by_id('id_username')
         username_value = 'changednewuser'
         username_field.clear()