diff --git a/docs/en/index.md b/docs/en/index.md
index a4c90b7..90b53a1 100644
--- a/docs/en/index.md
+++ b/docs/en/index.md
@@ -78,7 +78,7 @@ use SilverStripe\Security\Member;
 
 class MyTOTPRegisterHandlerExtension extends Extension
 {
-    public function updateTotp(TOTPInterface $totp, Member $member)
+    protected function updateTotp(TOTPInterface $totp, Member $member)
     {
         $totp->setLabel($member->getCustomTOTPLabel());
         $totp->setIssuer('My web project');