diff --git a/plugins/OpenID/OpenIDPlugin.php b/plugins/OpenID/OpenIDPlugin.php
index 2e9ada9806..4e5a0bfe0c 100644
--- a/plugins/OpenID/OpenIDPlugin.php
+++ b/plugins/OpenID/OpenIDPlugin.php
@@ -414,7 +414,7 @@ class OpenIDPlugin extends Plugin
      */
     function onRedirectToLogin($action, $user)
     {
-        if (common_config('site', 'openid_only') || (!empty($user) && User_openid::hasOpenID($user->id))) {
+        if (common_config('site', 'openidonly') || (!empty($user) && User_openid::hasOpenID($user->id))) {
             common_redirect(common_local_url('openidlogin'), 303);
         }
         return true;