diff --git a/src/azul2.rs b/src/azul2.rs
index 27ab8af..0ecf36a 100644
--- a/src/azul2.rs
+++ b/src/azul2.rs
@@ -1,3 +1,5 @@
+#![feature(bench_black_box)]
+
 use rand::prelude::*;
 use rand::distributions::WeightedIndex;
 
@@ -512,4 +514,4 @@ pub fn size_of_bitfields() -> Result<(), &'static str> {
     Ok(())
 
 
-}
\ No newline at end of file
+}