diff --git a/src/TwigExtension/SystemTagsTwigExtension.php b/src/TwigExtension/SystemTagsTwigExtension.php
index 46fbee6808b5465e76c210891f97d1226ca8838f..3a6116d88b5b003faf3cfc1613391e920314296f 100644
--- a/src/TwigExtension/SystemTagsTwigExtension.php
+++ b/src/TwigExtension/SystemTagsTwigExtension.php
@@ -40,7 +40,7 @@ class SystemTagsTwigExtension extends AbstractExtension {
    */
   public function getFunctions() {
     return [
-      new TwigFunction('system_tag_url', [$this, 'getSystemTagUrl']),
+      new TwigFunction('system_tag_url', $this->getSystemTagUrl(...)),
     ];
   }