diff --git a/internal/php5/php5.go b/internal/php5/php5.go
index 9995ca6..0ad9abe 100644
Binary files a/internal/php5/php5.go and b/internal/php5/php5.go differ
diff --git a/internal/php5/php5.y b/internal/php5/php5.y
index 4027440..d15a4f1 100644
--- a/internal/php5/php5.y
+++ b/internal/php5/php5.y
@@ -4529,7 +4529,7 @@ backticks_expr:
 ctor_arguments:
         /* empty */
             {
-                $$ = nil
+                $$ = &ast.ArgumentList{}
             }
     |   function_call_parameter_list
             {