diff --git a/src/Node/Node.php b/src/Node/Node.php
index 377422460..c890feb72 100644
--- a/src/Node/Node.php
+++ b/src/Node/Node.php
@@ -196,7 +196,7 @@ class Node implements \Twig_NodeInterface
     public function setNode($name, $node = null)
     {
         if (!$node instanceof \Twig_NodeInterface) {
-            @trigger_error(sprintf('Using "%s" for the value of node "%s" of "%s" is deprecated since version 1.25 and will be removed in 2.0.', \is_object($node) ? \get_class($node) : null === $node ? 'null' : \gettype($node), $name, \get_class($this)), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using "%s" for the value of node "%s" of "%s" is deprecated since version 1.25 and will be removed in 2.0.', \is_object($node) ? \get_class($node) : (null === $node ? 'null' : \gettype($node)), $name, \get_class($this)), E_USER_DEPRECATED);
         }
 
         $this->nodes[$name] = $node;