diff --git a/manta-pay/src/crypto/ecc/arkworks.rs b/manta-pay/src/crypto/ecc/arkworks.rs
index 7d42c0174..49195ed3c 100644
--- a/manta-pay/src/crypto/ecc/arkworks.rs
+++ b/manta-pay/src/crypto/ecc/arkworks.rs
@@ -18,7 +18,6 @@
 
 use crate::crypto::constraint::arkworks::{self, empty, full, Boolean, Fp, FpVar, R1CS};
 use alloc::vec::Vec;
-use ark_bls12_381::Bls12_381;
 use ark_ff::{BigInteger, Field, FpParameters, PrimeField};
 use ark_r1cs_std::ToBitsGadget;
 use ark_relations::ns;