diff --git a/src/test/run-pass/new-box-syntax.rs b/src/test/run-pass/new-box-syntax.rs
index b5a54a90ae75..d2ebd6863fa6 100644
--- a/src/test/run-pass/new-box-syntax.rs
+++ b/src/test/run-pass/new-box-syntax.rs
@@ -15,6 +15,7 @@
 
 #![allow(warnings)]
 #![feature(box_syntax, box_heap)]
+#![feature(placement_in_syntax)]
 
 // Tests that the new `box` syntax works with unique pointers.