diff --git a/tests/test_tree.rs b/tests/test_tree.rs
index e82be60..369d823 100644
--- a/tests/test_tree.rs
+++ b/tests/test_tree.rs
@@ -1,4 +1,4 @@
-#![feature(box_syntax)]
+#![feature(box_patterns)]
 
 extern crate two_three;