diff --git a/rtchallenge/src/tuples.rs b/rtchallenge/src/tuples.rs
index 0575f7b..1ce63a2 100644
--- a/rtchallenge/src/tuples.rs
+++ b/rtchallenge/src/tuples.rs
@@ -2,7 +2,7 @@ use std::ops::{Add, Div, Mul, Neg, Sub};
 
 use crate::{Float, EPSILON};
 
-#[derive(Debug, Copy, Clone)]
+#[derive(Debug, Default, Copy, Clone)]
 pub struct Tuple {
     pub x: Float,
     pub y: Float,