diff --git a/src/curve_models/mod.rs b/src/curve_models/mod.rs
index d35b9c1..7669a5e 100644
--- a/src/curve_models/mod.rs
+++ b/src/curve_models/mod.rs
@@ -73,7 +73,6 @@
 
 use core::fmt::Debug;
 use core::ops::{Add, Sub, Neg};
-use core::ops::Index;
 
 use constants;