diff --git a/src/mat2.rs b/src/mat2.rs
index 245bcc2..aaf1384 100644
--- a/src/mat2.rs
+++ b/src/mat2.rs
@@ -43,7 +43,7 @@ use mat::{
  * * `y` - the second column vector of the matrix
  * * `z` - the third column vector of the matrix
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Mat2<T> { x: Vec2<T>, y: Vec2<T> }
 
 impl<T:Copy + Float + FuzzyEq<T> + Add<T,T> + Sub<T,T> + Mul<T,T> + Div<T,T> + Neg<T>> Matrix<T, Vec2<T>> for Mat2<T> {
diff --git a/src/mat3.rs b/src/mat3.rs
index 347eeef..67cf467 100644
--- a/src/mat3.rs
+++ b/src/mat3.rs
@@ -45,7 +45,7 @@ use mat::{
  * * `y` - the second column vector of the matrix
  * * `z` - the third column vector of the matrix
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Mat3<T> { x: Vec3<T>, y: Vec3<T>, z: Vec3<T> }
 
 impl<T:Copy + Float + FuzzyEq<T> + Add<T,T> + Sub<T,T> + Mul<T,T> + Div<T,T> + Neg<T>> Matrix<T, Vec3<T>> for Mat3<T> {
diff --git a/src/mat4.rs b/src/mat4.rs
index b4283db..5f3c16a 100644
--- a/src/mat4.rs
+++ b/src/mat4.rs
@@ -42,7 +42,7 @@ use mat::{
  * * `z` - the third column vector of the matrix
  * * `w` - the fourth column vector of the matrix
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Mat4<T> { x: Vec4<T>, y: Vec4<T>, z: Vec4<T>, w: Vec4<T> }
 
 impl<T:Copy + Float + FuzzyEq<T> + Add<T,T> + Sub<T,T> + Mul<T,T> + Div<T,T> + Neg<T>> Matrix<T, Vec4<T>> for Mat4<T> {
diff --git a/src/quat.rs b/src/quat.rs
index dd5170c..5ce31e4 100644
--- a/src/quat.rs
+++ b/src/quat.rs
@@ -45,7 +45,7 @@ use vec::{
  * * `s` - the scalar component
  * * `v` - a vector containing the three imaginary components
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Quat<T> { s: T, v: Vec3<T> }
 
 impl<T:Copy + Float + FuzzyEq<T> + Add<T,T> + Sub<T,T> + Mul<T,T> + Div<T,T> + Neg<T>> Quat<T> {
diff --git a/src/vec2.rs b/src/vec2.rs
index 27c7e58..3e8ea5f 100644
--- a/src/vec2.rs
+++ b/src/vec2.rs
@@ -40,7 +40,7 @@ use vec::{
  * * `x` - the first component of the vector
  * * `y` - the second component of the vector
  */
- #[deriving_eq]
+ #[deriving(Eq)]
 pub struct Vec2<T> { x: T, y: T }
 
 impl<T:Copy + Eq> Vector<T> for Vec2<T> {
diff --git a/src/vec3.rs b/src/vec3.rs
index 606fd98..ecd6cef 100644
--- a/src/vec3.rs
+++ b/src/vec3.rs
@@ -42,7 +42,7 @@ use vec::{
  * * `y` - the second component of the vector
  * * `z` - the third component of the vector
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Vec3<T> { x: T, y: T, z: T }
 
 impl<T:Copy + Eq> Vector<T> for Vec3<T> {
diff --git a/src/vec4.rs b/src/vec4.rs
index 4bbae87..c7aa91f 100644
--- a/src/vec4.rs
+++ b/src/vec4.rs
@@ -40,7 +40,7 @@ use vec::{
  * * `z` - the third component of the vector
  * * `w` - the fourth component of the vector
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Vec4<T> { x: T, y: T, z: T, w: T }
 
 impl<T:Copy + Eq> Vector<T> for Vec4<T> {