diff --git a/trace_decoder/src/typed_mpt.rs b/trace_decoder/src/typed_mpt.rs
index 34b1b9312..dc56d54a1 100644
--- a/trace_decoder/src/typed_mpt.rs
+++ b/trace_decoder/src/typed_mpt.rs
@@ -129,7 +129,7 @@ impl TrieKey {
     pub fn from_slot_position(pos: U256) -> Self {
         let mut bytes = [0; 32];
         pos.to_big_endian(&mut bytes);
-        Self::from_hash(keccak_hash::keccak(bytes))
+        Self::from_hash(keccak_hash::keccak(H256::from_slice(&bytes)))
     }
     pub fn from_hash(H256(bytes): H256) -> Self {
         Self::new(AsNibbles(bytes)).expect("32 bytes is 64 nibbles, which fits")
diff --git a/zero/src/rpc/native/state.rs b/zero/src/rpc/native/state.rs
index e2d64e4df..833bb9070 100644
--- a/zero/src/rpc/native/state.rs
+++ b/zero/src/rpc/native/state.rs
@@ -107,7 +107,7 @@ fn insert_beacon_roots_update(
         (timestamp % chunk).into(),           // timestamp_idx
         ((timestamp % chunk) + chunk).into(), // root_idx
     ]);
-    state_access.insert(BEACON_ROOTS_CONTRACT_ADDRESS.0.into(), keys);
+    state_access.insert(BEACON_ROOTS_CONTRACT_ADDRESS.as_fixed_bytes().into(), keys);
 
     Ok(())
 }