diff --git a/components/expression_language/ast.rst b/components/expression_language/ast.rst
index 02bd0be8c4b..ac1e2b62057 100644
--- a/components/expression_language/ast.rst
+++ b/components/expression_language/ast.rst
@@ -21,7 +21,7 @@ method after parsing any expression to get its AST::
     use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
 
     $ast = (new ExpressionLanguage())
-        ->parse('1 + 2')
+        ->parse('1 + 2', array())
         ->getNodes()
     ;
 
@@ -41,7 +41,7 @@ method to turn the AST into an array::
     // ...
 
     $astAsArray = (new ExpressionLanguage())
-        ->parse('1 + 2')
+        ->parse('1 + 2', array())
         ->getNodes()
         ->toArray()
     ;