diff --git a/spartan_parallel/src/dense_mlpoly.rs b/spartan_parallel/src/dense_mlpoly.rs
index bdb6cd5b..5e04c3b6 100644
--- a/spartan_parallel/src/dense_mlpoly.rs
+++ b/spartan_parallel/src/dense_mlpoly.rs
@@ -11,16 +11,6 @@ use rayon::{iter::ParallelIterator, slice::ParallelSliceMut};
 use serde::{Deserialize, Serialize};
 use std::cmp::min;
 
-// _debug
-/*
-#[derive(Debug, Clone)]
-pub struct DensePolynomial<E: ExtensionField> {
-  num_vars: usize, // the number of variables in the multilinear polynomial
-  len: usize,
-  Z: Vec<E>, // evaluations of the polynomial in all the 2^num_vars Boolean inputs
-}
-*/
-
 pub struct EqPolynomial<E: ExtensionField> {
   r: Vec<E>,
 }
diff --git a/spartan_parallel/src/sumcheck.rs b/spartan_parallel/src/sumcheck.rs
index a5cbb13a..4e3d3b39 100644
--- a/spartan_parallel/src/sumcheck.rs
+++ b/spartan_parallel/src/sumcheck.rs
@@ -69,7 +69,6 @@ impl<E: ExtensionField> SumcheckInstanceProof<E> {
 }
 
 impl<E: ExtensionField> SumcheckInstanceProof<E> {
-  // _debug: remove native sumcheck prover
   pub fn prove_cubic<F>(
     claim: &E,
     num_rounds: usize,