diff --git a/lib/PhpParser/Internal/PrintableNewAnonClassNode.php b/lib/PhpParser/Internal/PrintableNewAnonClassNode.php
index 917ed1e854..dadf357100 100644
--- a/lib/PhpParser/Internal/PrintableNewAnonClassNode.php
+++ b/lib/PhpParser/Internal/PrintableNewAnonClassNode.php
@@ -31,8 +31,8 @@ class PrintableNewAnonClassNode extends Expr
     public $stmts;
 
     public function __construct(
-        array $attrGroups, int $flags, array $args, ?Node\Name $extends = null, array $implements,
-        array $stmts, array $attributes
+        array $attrGroups, int $flags, array $args, ?Node\Name $extends = null, array $implements = [],
+        array $stmts = [], array $attributes = []
     ) {
         parent::__construct($attributes);
         $this->attrGroups = $attrGroups;