diff --git a/src/lib.rs b/src/lib.rs
index 27c0240..802165a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -395,69 +395,57 @@ impl Interpolate for Quaternion<f32> {
 }
 
 #[cfg(feature = "impl-nalgebra")]
-impl<N : Scalar, D : DimName> Interpolate for na::Point<N, D> 
-  where DefaultAllocator : Allocator<N, D>,
+impl<N: Scalar, D: DimName> Interpolate for na::Point<N, D>
+  where DefaultAllocator: Allocator<N, D>,
         <DefaultAllocator as Allocator<N, D>>::Buffer: Copy,
-        N : Interpolate,
-{
+        N: Interpolate {
   fn lerp(a: Self, b: Self, t: f32) -> Self {
-    let lerp = |c1 : N, c2 : N| { Interpolate::lerp(c1, c2, t) };
-    let coords = na::Matrix::zip_map(&a.coords, &b.coords, lerp);
+    // The 'coords' of a point is just a vector, so we can interpolate component-wise
+    // over these vectors.
+    let coords = na::Vector::zip_map(&a.coords, &b.coords, |c1, c2| Interpolate::lerp(c1, c2, t));
     na::Point::from_coordinates(coords)
   }
 }
 
 #[cfg(feature = "impl-nalgebra")]
-impl Interpolate for na::Vector1<f32>
-{
-  fn lerp(a: Self, b: Self, t: f32) -> Self 
-  {
-    na::Matrix::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
+impl Interpolate for na::Vector1<f32> {
+  fn lerp(a: Self, b: Self, t: f32) -> Self {
+    na::Vector::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
   }
 }
 
 #[cfg(feature = "impl-nalgebra")]
-impl Interpolate for na::Vector2<f32>
-{
-  fn lerp(a: Self, b: Self, t: f32) -> Self 
-  {
-    na::Matrix::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
+impl Interpolate for na::Vector2<f32> {
+  fn lerp(a: Self, b: Self, t: f32) -> Self {
+    na::Vector::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
   }
 }
 
 #[cfg(feature = "impl-nalgebra")]
-impl Interpolate for na::Vector3<f32>
-{
-  fn lerp(a: Self, b: Self, t: f32) -> Self 
-  {
-    na::Matrix::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
+impl Interpolate for na::Vector3<f32> {
+  fn lerp(a: Self, b: Self, t: f32) -> Self {
+    na::Vector::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
   }
 }
 
 #[cfg(feature = "impl-nalgebra")]
-impl Interpolate for na::Vector4<f32>
-{
-  fn lerp(a: Self, b: Self, t: f32) -> Self 
-  {
-    na::Matrix::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
+impl Interpolate for na::Vector4<f32> {
+  fn lerp(a: Self, b: Self, t: f32) -> Self {
+    na::Vector::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
   }
 }
 
 #[cfg(feature = "impl-nalgebra")]
-impl Interpolate for na::Vector5<f32>
-{
-  fn lerp(a: Self, b: Self, t: f32) -> Self 
-  {
-    na::Matrix::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
+impl Interpolate for na::Vector5<f32> {
+  fn lerp(a: Self, b: Self, t: f32) -> Self {
+    na::Vector::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
   }
 }
 
 #[cfg(feature = "impl-nalgebra")]
-impl Interpolate for na::Vector6<f32>
-{
-  fn lerp(a: Self, b: Self, t: f32) -> Self 
-  {
-    na::Matrix::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
+impl Interpolate for na::Vector6<f32> {
+  fn lerp(a: Self, b: Self, t: f32) -> Self {
+    na::Vector::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
   }
 }
 
diff --git a/tests/mod.rs b/tests/mod.rs
index 39061ea..e171ee4 100644
--- a/tests/mod.rs
+++ b/tests/mod.rs
@@ -132,24 +132,24 @@ fn several_interpolations_several_keys() {
   assert_eq!(spline.clamped_sample(11.), 4.);
 }
 
-#[test]
 #[cfg(feature = "impl-nalgebra")]
+#[test]
 fn nalgebra_point_interpolation() {
-    let start : na::Point2<f32> = na::Point2::new(0.0, 0.0);
-    let mid   : na::Point2<f32> = na::Point2::new(0.5, 0.5);
-    let end   : na::Point2<f32> = na::Point2::new(1.0, 1.0);
+    let start = na::Point2::new(0.0, 0.0);
+    let mid   = na::Point2::new(0.5, 0.5);
+    let end   = na::Point2::new(1.0, 1.0);
 
     assert_eq!(Interpolate::lerp(start, end, 0.0), start);
     assert_eq!(Interpolate::lerp(start, end, 1.0), end);
     assert_eq!(Interpolate::lerp(start, end, 0.5), mid);
 }
 
-#[test]
 #[cfg(feature = "impl-nalgebra")]
+#[test]
 fn nalgebra_vector_interpolation() {
-    let start : na::Vector2<f32> = na::Vector2::new(0.0, 0.0);
-    let mid   : na::Vector2<f32> = na::Vector2::new(0.5, 0.5);
-    let end   : na::Vector2<f32> = na::Vector2::new(1.0, 1.0);
+    let start = na::Vector2::new(0.0, 0.0);
+    let mid   = na::Vector2::new(0.5, 0.5);
+    let end   = na::Vector2::new(1.0, 1.0);
 
     assert_eq!(Interpolate::lerp(start, end, 0.0), start);
     assert_eq!(Interpolate::lerp(start, end, 1.0), end);