diff --git a/bin/citrea/src/test_rpc.rs b/bin/citrea/src/test_rpc.rs
index 1289a7ad8..e556fddf9 100644
--- a/bin/citrea/src/test_rpc.rs
+++ b/bin/citrea/src/test_rpc.rs
@@ -288,9 +288,9 @@ fn test_get_batches() {
     let expected = jsonrpc_result!([{
         "hash":"0xf85fe0cb36fdaeca571c896ed476b49bb3c8eff00d935293a8967e1e9a62071e",
         "tx_range":{"start":3,"end":263},
-        "txs": batch2_tx_receipts().into_iter().map(|tx_receipt| format!("0x{}", hex::encode(tx_receipt.tx_hash) )).collect::<Vec<_>>(),
-
+        "txs": batch2_tx_receipts().into_iter().map(|tx_receipt| hex::encode(tx_receipt.tx_hash) ).collect::<Vec<_>>(),
     }]);
+
     regular_test_helper(payload, &expected);
 
     let payload = jsonrpc_req!("ledger_getBatches", [[2]]);
@@ -316,7 +316,7 @@ fn test_get_batches() {
 fn test_get_soft_batch() {
     // Get the first soft batch by number
     let payload = jsonrpc_req!("ledger_getSoftBatchByNumber", [1]);
-    let expected = jsonrpc_result!({"da_slot_height":0,"da_slot_hash":"0000000000000000000000000000000000000000000000000000000000000000","da_slot_txs_commitment":"0101010101010101010101010101010101010101010101010101010101010101","hash":"b5515a80204963f7db40e98af11aedb49a394b1c7e3d8b5b7a33346b8627444f","txs":["0x74783120626f6479", "0x74783220626f6479"],"pre_state_root":"","post_state_root":"","soft_confirmation_signature":"","pub_key":"","l1_fee_rate":0});
+    let expected = jsonrpc_result!({"da_slot_height":0,"da_slot_hash":"0000000000000000000000000000000000000000000000000000000000000000","da_slot_txs_commitment":"0101010101010101010101010101010101010101010101010101010101010101","hash":"b5515a80204963f7db40e98af11aedb49a394b1c7e3d8b5b7a33346b8627444f","txs":["74783120626f6479", "74783220626f6479"],"pre_state_root":"","post_state_root":"","soft_confirmation_signature":"","pub_key":"","l1_fee_rate":0});
     regular_test_helper(payload, &expected);
 
     // Get the first soft batch by hash
@@ -330,12 +330,7 @@ fn test_get_soft_batch() {
     let payload = jsonrpc_req!("ledger_getSoftBatchByNumber", [2]);
     let txs = batch2_tx_receipts()
         .into_iter()
-        .map(|tx_receipt| {
-            format!(
-                "0x{}",
-                tx_receipt.body_to_save.unwrap().encode_hex::<String>()
-            )
-        })
+        .map(|tx_receipt| tx_receipt.body_to_save.unwrap().encode_hex::<String>())
         .collect::<Vec<String>>();
     let expected = jsonrpc_result!(
         {"da_slot_height":1,"da_slot_hash":"0202020202020202020202020202020202020202020202020202020202020202","da_slot_txs_commitment":"0303030303030303030303030303030303030303030303030303030303030303","hash":"f85fe0cb36fdaeca571c896ed476b49bb3c8eff00d935293a8967e1e9a62071e","txs": txs, "pre_state_root":"","post_state_root":"","soft_confirmation_signature":"","pub_key":"","l1_fee_rate":0}
@@ -354,15 +349,10 @@ fn test_get_soft_batch() {
 
     let txs = batch2_tx_receipts()
         .into_iter()
-        .map(|tx_receipt| {
-            format!(
-                "0x{}",
-                tx_receipt.body_to_save.unwrap().encode_hex::<String>()
-            )
-        })
+        .map(|tx_receipt| tx_receipt.body_to_save.unwrap().encode_hex::<String>())
         .collect::<Vec<String>>();
     let expected = jsonrpc_result!(
-        [{"da_slot_height":0,"da_slot_hash":"0000000000000000000000000000000000000000000000000000000000000000","da_slot_txs_commitment":"0101010101010101010101010101010101010101010101010101010101010101","hash":"b5515a80204963f7db40e98af11aedb49a394b1c7e3d8b5b7a33346b8627444f","txs":["0x74783120626f6479", "0x74783220626f6479"],"pre_state_root":"","post_state_root":"","soft_confirmation_signature":"","pub_key":"","l1_fee_rate":0},{"da_slot_height":1,"da_slot_hash":"0202020202020202020202020202020202020202020202020202020202020202","da_slot_txs_commitment":"0303030303030303030303030303030303030303030303030303030303030303","hash":"f85fe0cb36fdaeca571c896ed476b49bb3c8eff00d935293a8967e1e9a62071e","txs": txs, "pre_state_root":"","post_state_root":"","soft_confirmation_signature":"","pub_key":"","l1_fee_rate":0}
+        [{"da_slot_height":0,"da_slot_hash":"0000000000000000000000000000000000000000000000000000000000000000","da_slot_txs_commitment":"0101010101010101010101010101010101010101010101010101010101010101","hash":"b5515a80204963f7db40e98af11aedb49a394b1c7e3d8b5b7a33346b8627444f","txs":["74783120626f6479", "74783220626f6479"],"pre_state_root":"","post_state_root":"","soft_confirmation_signature":"","pub_key":"","l1_fee_rate":0},{"da_slot_height":1,"da_slot_hash":"0202020202020202020202020202020202020202020202020202020202020202","da_slot_txs_commitment":"0303030303030303030303030303030303030303030303030303030303030303","hash":"f85fe0cb36fdaeca571c896ed476b49bb3c8eff00d935293a8967e1e9a62071e","txs": txs, "pre_state_root":"","post_state_root":"","soft_confirmation_signature":"","pub_key":"","l1_fee_rate":0}
         ]
     );
     regular_test_helper(payload, &expected);
@@ -553,7 +543,7 @@ proptest!(
                 let batch_hash = hex::encode(curr_batch.batch_hash);
                 let _batch_receipt= 0;
                 let tx_hashes: Vec<String> = curr_batch.tx_receipts.iter().map(|tx| {
-                    format!("0x{}", hex::encode(tx.tx_hash))
+                    hex::encode(tx.tx_hash)
                 }).collect();
                 let full_txs = curr_batch.tx_receipts.iter().enumerate().map(|(tx_id, tx)|
                    full_tx_json(curr_tx_num + tx_id, tx, &tx_id_to_event_range)
diff --git a/crates/sovereign-sdk/rollup-interface/src/node/rpc/mod.rs b/crates/sovereign-sdk/rollup-interface/src/node/rpc/mod.rs
index 765512421..fc85ac86e 100644
--- a/crates/sovereign-sdk/rollup-interface/src/node/rpc/mod.rs
+++ b/crates/sovereign-sdk/rollup-interface/src/node/rpc/mod.rs
@@ -250,7 +250,7 @@ pub struct TxResponse<Tx> {
 #[serde(untagged)]
 pub enum ItemOrHash<T> {
     /// The hex encoded hash of the requested item.
-    Hash(#[serde(with = "utils::rpc_hex")] [u8; 32]),
+    Hash(#[serde(with = "hex::serde")] [u8; 32]),
     /// The full item body.
     Full(T),
 }