diff --git a/benches/join.rs b/benches/join.rs
index ba345da..895e6e2 100644
--- a/benches/join.rs
+++ b/benches/join.rs
@@ -56,7 +56,7 @@ mod tree {
     }
 }
 
-const TREE_SIZE: usize = 13;
+const TREE_SIZE: usize = 16;
 
 #[bench]
 fn join_melange(b: &mut Bencher) {