diff --git a/snark-verifier/src/pcs/kzg/decider.rs b/snark-verifier/src/pcs/kzg/decider.rs
index bd2d8f5e..a39ca1ae 100644
--- a/snark-verifier/src/pcs/kzg/decider.rs
+++ b/snark-verifier/src/pcs/kzg/decider.rs
@@ -132,9 +132,9 @@ mod evm {
     impl<M, MOS> AccumulationDecider<M::G1Affine, Rc<EvmLoader>> for KzgAs<M, MOS>
     where
         M: MultiMillerLoop,
-        M::G1Affine: CurveAffine,
+        M::Fr: PrimeField<Repr = [u8; 0x20]>,
+        M::G1Affine: CurveAffine<ScalarExt = M::Fr>,
         M::G2Affine: CurveAffine,
-        <M::G1Affine as CurveAffine>::ScalarExt: PrimeField<Repr = [u8; 0x20]>,
         MOS: Clone + Debug,
     {
         type DecidingKey = KzgDecidingKey<M>;
@@ -183,11 +183,7 @@ mod evm {
                 loader.code_mut().runtime_append(code);
                 let challenge = loader.scalar(Value::Memory(challenge_ptr));
 
-                let powers_of_challenge =
-                    LoadedScalar::<<M::G1Affine as CurveAffine>::ScalarExt>::powers(
-                        &challenge,
-                        lhs.len(),
-                    );
+                let powers_of_challenge = LoadedScalar::<M::Fr>::powers(&challenge, lhs.len());
                 let [lhs, rhs] = [lhs, rhs].map(|msms| {
                     msms.iter()
                         .zip(powers_of_challenge.iter())
diff --git a/snark-verifier/src/system/halo2/test/kzg.rs b/snark-verifier/src/system/halo2/test/kzg.rs
index 6528a822..7b5ee136 100644
--- a/snark-verifier/src/system/halo2/test/kzg.rs
+++ b/snark-verifier/src/system/halo2/test/kzg.rs
@@ -30,7 +30,7 @@ where
 pub fn main_gate_with_range_with_mock_kzg_accumulator<
     C: CurveAffine,
     M: MultiMillerLoop<G1Affine = C, Fr = C::ScalarExt, G1 = C::CurveExt>,
->() -> MainGateWithRange<<M::G1Affine as CurveAffine>::ScalarExt>
+>() -> MainGateWithRange<M::Fr>
 where
     M::G2Affine: CurveAffine + SerdeObject,
     M::G1Affine: CurveAffine + SerdeObject,