diff --git a/doc/3_Other_node_tree_representations.markdown b/doc/3_Other_node_tree_representations.markdown
index 0830f39..9000412 100644
--- a/doc/3_Other_node_tree_representations.markdown
+++ b/doc/3_Other_node_tree_representations.markdown
@@ -104,7 +104,6 @@ printLine('Hello World!!!');
 CODE;
 
 $parser = (new PhpParser\ParserFactory)->create(PhpParser\ParserFactory::PREFER_PHP7);
-$nodeDumper = new PhpParser\NodeDumper;
 
 try {
     $stmts = $parser->parse($code);
@@ -327,4 +326,4 @@ Produces:
   </node:Expr_FuncCall>
  </scalar:array>
 </AST>
-```
\ No newline at end of file
+```