diff --git a/phpBB/phpbb/template/twig/environment.php b/phpBB/phpbb/template/twig/environment.php
index 5843cc0762c..7def1751467 100644
--- a/phpBB/phpbb/template/twig/environment.php
+++ b/phpBB/phpbb/template/twig/environment.php
@@ -69,7 +69,6 @@ public function __construct(\phpbb\config\config $phpbb_config, \phpbb\filesyste
 		$this->phpbb_dispatcher = $phpbb_dispatcher;
 
 		$this->phpbb_root_path = $this->phpbb_path_helper->get_phpbb_root_path();
-		$this->web_root_path = $this->phpbb_path_helper->get_web_root_path();
 
 		$this->assets_bag = new assets_bag();
 
@@ -132,7 +131,7 @@ public function get_filesystem()
 	*/
 	public function get_web_root_path()
 	{
-		return $this->web_root_path;
+		return $this->web_root_path ?? $this->web_root_path = $this->phpbb_path_helper->get_web_root_path();
 	}
 
 	/**