diff --git a/math/src/field/fields/mersenne31/extensions.rs b/math/src/field/fields/mersenne31/extensions.rs
index d6368d8b1..69c64f096 100644
--- a/math/src/field/fields/mersenne31/extensions.rs
+++ b/math/src/field/fields/mersenne31/extensions.rs
@@ -1,5 +1,3 @@
-use core::num::FpCategory;
-
 use super::field::Mersenne31Field;
 use crate::field::{
     element::FieldElement,