diff --git a/src/Extensions/LeftAndMainSubsites.php b/src/Extensions/LeftAndMainSubsites.php
index 733b092d..a12d1e01 100644
--- a/src/Extensions/LeftAndMainSubsites.php
+++ b/src/Extensions/LeftAndMainSubsites.php
@@ -41,7 +41,7 @@ class LeftAndMainSubsites extends LeftAndMainExtension
      */
     private static $treats_subsite_0_as_global = false;
 
-    public function init()
+    protected function onInit()
     {
         Requirements::css('silverstripe/subsites:client/dist/styles/LeftAndMain_Subsites.css');
         Requirements::javascript('silverstripe/subsites:client/dist/js/LeftAndMain_Subsites.js');
diff --git a/src/Extensions/SiteTreeSubsites.php b/src/Extensions/SiteTreeSubsites.php
index 94008cd7..4a17c4f4 100644
--- a/src/Extensions/SiteTreeSubsites.php
+++ b/src/Extensions/SiteTreeSubsites.php
@@ -445,7 +445,7 @@ protected function updatePreviewLink(&$link, $action = null)
      * @param $tags
      * @return string
      */
-    public function MetaTags(&$tags)
+    protected function updateMetaTags(&$tags)
     {
         if ($this->owner->SubsiteID) {
             $tags .= '<meta name="x-subsite-id" content="' . $this->owner->SubsiteID . "\" />\n";