diff --git a/src/hash/hashing.rs b/src/hash/hashing.rs
index a63106be..309182dc 100644
--- a/src/hash/hashing.rs
+++ b/src/hash/hashing.rs
@@ -13,13 +13,6 @@ pub(crate) const SPONGE_RATE: usize = 8;
 pub(crate) const SPONGE_CAPACITY: usize = 4;
 pub const SPONGE_WIDTH: usize = SPONGE_RATE + SPONGE_CAPACITY;
 
-// pub(crate) const HASH_FAMILY: HashFamily = HashFamily::Poseidon;
-//
-// pub(crate) enum HashFamily {
-//     GMiMC,
-//     Poseidon,
-// }
-
 /// Hash the vector if necessary to reduce its length to ~256 bits. If it already fits, this is a
 /// no-op.
 pub fn hash_or_noop<F: RichField, P: PlonkyPermutation<F>>(inputs: Vec<F>) -> HashOut<F> {
diff --git a/src/hash/poseidon.rs b/src/hash/poseidon.rs
index b94cc481..377ff2b7 100644
--- a/src/hash/poseidon.rs
+++ b/src/hash/poseidon.rs
@@ -10,6 +10,7 @@ use crate::field::extension_field::{Extendable, FieldExtension};
 use crate::field::field_types::{Field, PrimeField, RichField};
 use crate::gates::gate::Gate;
 use crate::gates::poseidon_mds::PoseidonMdsGate;
+use crate::hash::hashing::SPONGE_WIDTH;
 use crate::plonk::circuit_builder::CircuitBuilder;
 
 // The number of full rounds and partial rounds is given by the
@@ -144,7 +145,7 @@ pub const ALL_ROUND_CONSTANTS: [u64; MAX_WIDTH * N_ROUNDS]  = [
     0x4543d9df72c4831d, 0xf172d73e69f20739, 0xdfd1c4ff1eb3d868, 0xbc8dfb62d26376f7,
 ];
 
-const WIDTH: usize = 12;
+const WIDTH: usize = SPONGE_WIDTH;
 pub trait Poseidon: PrimeField {
     // Total number of round constants required: width of the input
     // times number of rounds.