diff --git a/crates/prover/src/core/pcs/prover.rs b/crates/prover/src/core/pcs/prover.rs
index 58d347ee6..6ea42742a 100644
--- a/crates/prover/src/core/pcs/prover.rs
+++ b/crates/prover/src/core/pcs/prover.rs
@@ -205,13 +205,13 @@ pub struct CommitmentTreeProver<B: BackendForChannel<MC>, MC: MerkleChannel> {
 
 impl<B: BackendForChannel<MC>, MC: MerkleChannel> CommitmentTreeProver<B, MC> {
     pub fn new(
-        mut polynomials: ColumnVec<CirclePoly<B>>,
+        polynomials: ColumnVec<CirclePoly<B>>,
         log_blowup_factor: u32,
         channel: &mut MC::C,
         twiddles: &TwiddleTree<B>,
     ) -> Self {
         let span = span!(Level::INFO, "Extension").entered();
-        let evaluations = B::evaluate_polynomials(&mut polynomials, log_blowup_factor, twiddles);
+        let evaluations = B::evaluate_polynomials(&polynomials, log_blowup_factor, twiddles);
         span.exit();
 
         let _span = span!(Level::INFO, "Merkle").entered();
diff --git a/crates/prover/src/core/poly/circle/ops.rs b/crates/prover/src/core/poly/circle/ops.rs
index a08fa6739..9aa6b2686 100644
--- a/crates/prover/src/core/poly/circle/ops.rs
+++ b/crates/prover/src/core/poly/circle/ops.rs
@@ -57,7 +57,7 @@ pub trait PolyOps: FieldOps<BaseField> + Sized {
     ) -> CircleEvaluation<Self, BaseField, BitReversedOrder>;
 
     fn evaluate_polynomials(
-        polynomials: &mut ColumnVec<CirclePoly<Self>>,
+        polynomials: &ColumnVec<CirclePoly<Self>>,
         log_blowup_factor: u32,
         twiddles: &TwiddleTree<Self>,
     ) -> Vec<CircleEvaluation<Self, BaseField, BitReversedOrder>> {