diff --git a/config.sample.json b/config.sample.json
index 88c0e3a92c2..dab9983294b 100644
--- a/config.sample.json
+++ b/config.sample.json
@@ -12,6 +12,7 @@
     "disable_guests": false,
     "disable_login_language_selector": false,
     "disable_3pid_login": false,
+    "show_oauth": false,
     "brand": "Riot",
     "integrations_ui_url": "https://scalar.vector.im/",
     "integrations_rest_url": "https://scalar.vector.im/api",
diff --git a/res/welcome.html b/res/welcome.html
index 5331a934f07..53faa0181cc 100644
--- a/res/welcome.html
+++ b/res/welcome.html
@@ -96,6 +96,15 @@
     color: #2e2f32 !important;
 }
 
+.mx_ButtonFullWidth {
+    width: 100%;
+}
+
+.mx_ButtonOAuth {
+    background-color: #d68136;
+    color: white !important;
+}
+
 .mx_ButtonHeadline {
     margin-bottom: 14px;
 }