diff --git a/src/rational.rs b/src/rational.rs
index 384e8f7..5ac1e9e 100644
--- a/src/rational.rs
+++ b/src/rational.rs
@@ -1,18 +1,7 @@
 //! # Rational Numbers (fractions)
-//!
-//! Traits to implement:
-//! * Add
-//! * AddAssign
-//! * Div
-//! * DivAssign
-//! * Mul
-//! * MulAssign
-//! * Neg
-//! * Sub
-//! * SubAssign
 
 use crate::num::*;
-use std::ops::{Add, Div, Mul, Neg, Sub};
+use std::ops::{Add, AddAssign, Div, DivAssign,  Mul, MulAssign, Neg, Sub, SubAssign};
 
 #[derive(Debug, Copy, Clone, Eq, PartialEq)]
 pub struct Frac<T: Unsigned = usize> {