diff --git a/crates/ef-testing/src/evm_sequencer/account/mod.rs b/crates/ef-testing/src/evm_sequencer/account/mod.rs
index dea89133..5b261953 100644
--- a/crates/ef-testing/src/evm_sequencer/account/mod.rs
+++ b/crates/ef-testing/src/evm_sequencer/account/mod.rs
@@ -82,9 +82,9 @@ pub mod kkrt_account {
 }
 
 /// Splits a byte array into 31-byte chunks and converts each chunk to a StarkFelt.
-pub fn split_bytecode_to_starkfelt(bytecode: &[u8]) -> impl Iterator<Item = StarkFelt> + '_ {
-    bytecode.chunks(31).filter_map(|bytes| {
-        let f = FieldElement::from_byte_slice_be(bytes);
+pub fn pack_byte_array_to_starkfelt_array(bytes: &[u8]) -> impl Iterator<Item = StarkFelt> + '_ {
+    bytes.chunks(31).filter_map(|chunk_bytes| {
+        let f = FieldElement::from_byte_slice_be(chunk_bytes);
         f.map(StarkFelt::from).ok()
     })
 }
@@ -121,12 +121,12 @@ mod tests {
     use reth_primitives::Bytes;
 
     #[test]
-    fn test_split_bytecode_to_starkfelt() {
+    fn test_pack_byte_array_to_starkfelt_array() {
         // Given
         let bytes = Bytes::from([0x01, 0x02, 0x03, 0x04, 0x05]);
 
         // When
-        let result: Vec<_> = split_bytecode_to_starkfelt(&bytes).collect();
+        let result: Vec<_> = pack_byte_array_to_starkfelt_array(&bytes).collect();
 
         // Then
         assert_eq!(result, vec![StarkFelt::from(0x0102030405u64)]);
diff --git a/crates/ef-testing/src/evm_sequencer/account/v0.rs b/crates/ef-testing/src/evm_sequencer/account/v0.rs
index 1d092cda..b7e57b45 100644
--- a/crates/ef-testing/src/evm_sequencer/account/v0.rs
+++ b/crates/ef-testing/src/evm_sequencer/account/v0.rs
@@ -6,7 +6,7 @@ use starknet_api::core::PatriciaKey;
 use starknet_api::{core::Nonce, hash::StarkFelt, state::StorageKey, StarknetApiError};
 use starknet_crypto::FieldElement;
 
-use super::{split_bytecode_to_starkfelt, KakarotAccount};
+use super::{pack_byte_array_to_starkfelt_array, KakarotAccount};
 use crate::evm_sequencer::constants::storage_variables::{
     ACCOUNT_BYTECODE_LEN, ACCOUNT_EVM_ADDRESS, ACCOUNT_IS_INITIALIZED,
     ACCOUNT_JUMPDESTS_INITIALIZED, ACCOUNT_NONCE, ACCOUNT_STORAGE, ACCOUNT_VALID_JUMPDESTS,
@@ -42,7 +42,7 @@ impl KakarotAccount {
         storage.append(&mut vec![starknet_storage!(ACCOUNT_NONCE, nonce)]);
 
         // Initialize the bytecode storage var.
-        let mut bytecode_storage = split_bytecode_to_starkfelt(code)
+        let mut bytecode_storage = pack_byte_array_to_starkfelt_array(code)
             .enumerate()
             .map(|(i, bytes)| (StorageKey::from(i as u32), bytes))
             .collect();
diff --git a/crates/ef-testing/src/evm_sequencer/account/v1.rs b/crates/ef-testing/src/evm_sequencer/account/v1.rs
index 80af89ef..90d3f9ad 100644
--- a/crates/ef-testing/src/evm_sequencer/account/v1.rs
+++ b/crates/ef-testing/src/evm_sequencer/account/v1.rs
@@ -8,7 +8,7 @@ use starknet_api::{
 };
 
 use super::KakarotAccount;
-use super::{inner_byte_array_pointer, split_bytecode_to_starkfelt};
+use super::{inner_byte_array_pointer, pack_byte_array_to_starkfelt_array};
 use crate::evm_sequencer::constants::storage_variables::{
     ACCOUNT_EVM_ADDRESS, ACCOUNT_IS_INITIALIZED, ACCOUNT_NONCE, ACCOUNT_STORAGE,
 };
@@ -32,7 +32,7 @@ fn prepare_bytearray_storage(code: &Bytes) -> Vec<(StorageKey, StarkFelt)> {
     let bytecode_base_address = get_storage_var_address(ACCOUNT_BYTECODE, &[]);
     let mut bytearray = vec![(bytecode_base_address, StarkFelt::from(code.len() as u128))];
 
-    let bytecode_storage: Vec<_> = split_bytecode_to_starkfelt(code)
+    let bytecode_storage: Vec<_> = pack_byte_array_to_starkfelt_array(code)
         .enumerate()
         .map(|(index, b)| {
             let offset = index % 256;
diff --git a/crates/ef-testing/src/evm_sequencer/evm_state/v1.rs b/crates/ef-testing/src/evm_sequencer/evm_state/v1.rs
index 43dce18d..58c71254 100644
--- a/crates/ef-testing/src/evm_sequencer/evm_state/v1.rs
+++ b/crates/ef-testing/src/evm_sequencer/evm_state/v1.rs
@@ -458,7 +458,7 @@ mod tests {
             transaction: reth_primitives::Transaction::Legacy(TxLegacy {
                 chain_id: Some(CHAIN_ID),
                 gas_limit: 1_000_000,
-                to: reth_primitives::TransactionKind::Call(*TEST_CONTRACT_ADDRESS),
+                to: reth_primitives::TxKind::Call(*TEST_CONTRACT_ADDRESS),
                 ..Default::default()
             }),
         };
diff --git a/crates/ef-testing/src/evm_sequencer/utils.rs b/crates/ef-testing/src/evm_sequencer/utils.rs
index 3e7b3ef8..aab9269c 100644
--- a/crates/ef-testing/src/evm_sequencer/utils.rs
+++ b/crates/ef-testing/src/evm_sequencer/utils.rs
@@ -47,7 +47,25 @@ pub fn to_broadcasted_starknet_transaction(
     let mut bytes = BytesMut::new();
     transaction.transaction.encode_without_signature(&mut bytes);
 
-    let mut calldata: Vec<_> = bytes.into_iter().map(FieldElement::from).collect();
+    let mut calldata: Vec<FieldElement> = {
+        // Pack the calldata in 31-byte chunks.
+        #[cfg(feature = "v0")]
+        {
+            use crate::evm_sequencer::account::pack_byte_array_to_starkfelt_array;
+            let bytes_u8: Vec<u8> = bytes.into_iter().collect();
+            let bytes_len = bytes_u8.len();
+            let packed_data: Vec<_> = pack_byte_array_to_starkfelt_array(bytes_u8.as_slice())
+                .map(FieldElement::from)
+                .collect();
+            std::iter::once(FieldElement::from(bytes_len))
+                .chain(packed_data)
+                .collect()
+        }
+        #[cfg(not(feature = "v0"))]
+        {
+            bytes.into_iter().map(FieldElement::from).collect()
+        }
+    };
 
     let mut execute_calldata = {
         #[cfg(feature = "v0")]