diff --git a/src/mat.rs b/src/mat.rs
index d9f57ad..f48d832 100644
--- a/src/mat.rs
+++ b/src/mat.rs
@@ -18,7 +18,7 @@ pub use mat4::{Mat4, mat4, dmat4};
  *         floating point type and have the same number of dimensions as the
  *         number of rows and columns in the matrix.
  */
-pub trait Matrix<T,V>: Index<uint, V> Eq Neg<self> {
+pub trait Matrix<T,V>: Index<uint, V> Eq Neg<Self> {
     /**
      * # Return value
      *
diff --git a/src/vec.rs b/src/vec.rs
index b259ba9..c6af9a5 100644
--- a/src/vec.rs
+++ b/src/vec.rs
@@ -67,7 +67,7 @@ pub trait Vector4<T>: Vector<T> {
 /**
  * A vector with numeric components
  */
-pub trait NumericVector<T>: Vector<T> Neg<self> {
+pub trait NumericVector<T>: Vector<T> Neg<Self> {
     /**
      * The standard basis vector
      *