diff --git a/leader/src/mpt.rs b/leader/src/mpt.rs
index aaccda8..c888204 100644
--- a/leader/src/mpt.rs
+++ b/leader/src/mpt.rs
@@ -275,7 +275,7 @@ pub fn apply_diffs(
             mpt.insert(
                 address2nibbles(*addr),
                 __ethers_for_compat::utils::rlp::encode(&account).to_vec(),
-            ) // TODO(aatifsyed): make the required change to evm_arithmetization
+            )
             .unwrap();
         } else {
             let old = mpt
@@ -375,6 +375,9 @@ pub fn trim(
 }
 
 fn into_uint(hash: B256) -> U256 {
-    U256::from_be_bytes(*hash) // TODO(aatifsyed): is this
-                               // right?
+    // TODO(aatifsyed): unclear if this is correct.
+    #[cfg(target_endian = "little")]
+    return U256::from_le_bytes(*hash);
+    #[cfg(target_endian = "big")]
+    return U256::from_be_bytes(*hash);
 }
diff --git a/leader/src/utils.rs b/leader/src/utils.rs
index d81dfa1..dd884a7 100644
--- a/leader/src/utils.rs
+++ b/leader/src/utils.rs
@@ -27,7 +27,9 @@ pub fn has_storage_deletion(trace: &GethTrace) -> bool {
     false
 }
 /// This crate wants to use [`alloy`], but [`evm_arithmetization`] uses
-/// [`ethers`] etc. Migrating our dependencies is tracked by TODO(aatifsyed)
+/// [`ethers`](__ethers_for_compat) etc.
+///
+/// Migrating our dependencies is tracked by [zk_evm#226](https://github.com/0xPolygonZero/zk_evm/issues/229)
 pub mod compat {
     use std::array;