diff --git a/poly-commit/src/marlin/marlin_pst13_pc/mod.rs b/poly-commit/src/marlin/marlin_pst13_pc/mod.rs
index b0f7114a..b16f4e1e 100644
--- a/poly-commit/src/marlin/marlin_pst13_pc/mod.rs
+++ b/poly-commit/src/marlin/marlin_pst13_pc/mod.rs
@@ -13,7 +13,7 @@ use ark_ec::{
 use ark_ff::{One, PrimeField, UniformRand, Zero};
 use ark_poly::{multivariate::Term, DenseMVPolynomial};
 use ark_std::{marker::PhantomData, ops::Index, ops::Mul, rand::RngCore};
-#[cfg(not(feature = "std"))]
+// #[cfg(not(feature = "std"))]
 use ark_std::{string::ToString, vec::Vec};
 #[cfg(feature = "parallel")]
 use rayon::prelude::*;
diff --git a/poly-commit/src/marlin/mod.rs b/poly-commit/src/marlin/mod.rs
index 714ad727..4452d1d3 100644
--- a/poly-commit/src/marlin/mod.rs
+++ b/poly-commit/src/marlin/mod.rs
@@ -7,7 +7,7 @@ use ark_crypto_primitives::sponge::CryptographicSponge;
 use ark_ec::{pairing::Pairing, AffineRepr, CurveGroup};
 use ark_ff::{One, Zero};
 use ark_std::{convert::TryInto, hash::Hash, ops::AddAssign, ops::Mul};
-#[cfg(not(feature = "std"))]
+// #[cfg(not(feature = "std"))]
 use ark_std::{
     string::{String, ToString},
     vec::Vec,