diff --git a/benches/construction.rs b/benches/construction.rs
index ab382ae..de96c89 100644
--- a/benches/construction.rs
+++ b/benches/construction.rs
@@ -13,12 +13,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#![feature(test)]
 
-
+extern crate rand;
 extern crate test;
 extern crate cgmath;
 
-use std::rand::{IsaacRng, Rng};
+use rand::{IsaacRng, Rng};
 use std::iter;
 use test::Bencher;
 use cgmath::{Quaternion, Basis2, Basis3, Vector3, Rotation2, Rotation3, Rad};
diff --git a/benches/mat.rs b/benches/mat.rs
index 474191c..8c64ba3 100644
--- a/benches/mat.rs
+++ b/benches/mat.rs
@@ -13,13 +13,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#![feature(test)]
 
-
-
+extern crate rand;
 extern crate test;
 extern crate cgmath;
 
-use std::rand::{IsaacRng, Rng};
+use rand::{IsaacRng, Rng};
 use test::Bencher;
 use cgmath::*;
 
diff --git a/benches/quat.rs b/benches/quat.rs
index 1b00a1a..7474b29 100644
--- a/benches/quat.rs
+++ b/benches/quat.rs
@@ -13,13 +13,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#![feature(test)]
 
-
-
+extern crate rand;
 extern crate test;
 extern crate cgmath;
 
-use std::rand::{IsaacRng, Rng};
+use rand::{IsaacRng, Rng};
 use test::Bencher;
 use cgmath::*;
 
diff --git a/benches/vec.rs b/benches/vec.rs
index 084a841..ec692bb 100644
--- a/benches/vec.rs
+++ b/benches/vec.rs
@@ -13,13 +13,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#![feature(test)]
 
-
-
+extern crate rand;
 extern crate test;
 extern crate cgmath;
 
-use std::rand::{IsaacRng, Rng};
+use rand::{IsaacRng, Rng};
 use test::Bencher;
 use cgmath::*;
 
diff --git a/tests/projection.rs b/tests/projection.rs
index 94cf3f8..7e4d788 100644
--- a/tests/projection.rs
+++ b/tests/projection.rs
@@ -13,8 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#![feature(core)]
-
 extern crate cgmath;
 
 use cgmath::{Vector4, ortho, Matrix, Matrix4, Vector};