diff --git a/index.php b/index.php
index 2c752341c..733074d79 100644
--- a/index.php
+++ b/index.php
@@ -14,6 +14,7 @@ require __DIR__ . '/common.php';
 $page_cfg['load_tpl_vars'] = [
     'post_icons'
 ];
+$page_cfg['canonical_link'] = true;
 
 // Show last topic
 $show_last_topic = true;
diff --git a/library/includes/page_header.php b/library/includes/page_header.php
index d5a86fcc8..0c715ddaa 100644
--- a/library/includes/page_header.php
+++ b/library/includes/page_header.php
@@ -125,7 +125,7 @@ $template->assign_vars([
     'ALLOW_ROBOTS' => !$bb_cfg['board_disable'] && (!isset($page_cfg['allow_robots']) || $page_cfg['allow_robots'] === true),
     'META_CANONICAL' => (isset($page_cfg['canonical_link']) && $page_cfg['canonical_link'] === true)
         ? getCanonicalUrl()
-        : ((is_string($page_cfg['canonical_link'])) ? $page_cfg['canonical_link'] : false),
+        : ((isset($page_cfg['canonical_link']) && is_string($page_cfg['canonical_link'])) ? $page_cfg['canonical_link'] : false),
     'META_DESCRIPTION' => $page_cfg['meta_description'] ?? '',
 
     'SITENAME' => $bb_cfg['sitename'],