diff --git a/benches/core/matrix.rs b/benches/core/matrix.rs
index 8f3d6305..ec1102b7 100644
--- a/benches/core/matrix.rs
+++ b/benches/core/matrix.rs
@@ -142,7 +142,7 @@ fn iter(bench: &mut criterion::Criterion) {
     bench.bench_function("iter", move |bh| {
         bh.iter(|| {
             for value in a.iter() {
-                criterion::black_box(value);
+                std::hint::black_box(value);
             }
         })
     });
@@ -154,7 +154,7 @@ fn iter_rev(bench: &mut criterion::Criterion) {
     bench.bench_function("iter_rev", move |bh| {
         bh.iter(|| {
             for value in a.iter().rev() {
-                criterion::black_box(value);
+                std::hint::black_box(value);
             }
         })
     });
diff --git a/benches/lib.rs b/benches/lib.rs
index 1f75ff7e..d0ade4b9 100644
--- a/benches/lib.rs
+++ b/benches/lib.rs
@@ -1,4 +1,3 @@
-#![feature(bench_black_box)]
 #![allow(unused_macros)]
 
 extern crate nalgebra as na;