diff --git a/crates/contracts/tests/test_execution_from_outside.cairo b/crates/contracts/tests/test_execution_from_outside.cairo
index 9daff0fe..3b29a04d 100644
--- a/crates/contracts/tests/test_execution_from_outside.cairo
+++ b/crates/contracts/tests/test_execution_from_outside.cairo
@@ -251,35 +251,6 @@ fn test_execute_from_outside_invalid_signature() {
     tear_down(contract_account);
 }
 
-#[test]
-#[should_panic(expected: 'EOA: could not decode tx')]
-fn test_execute_from_outside_invalid_tx() {
-    let (kakarot_core, contract_account, _) = set_up();
-
-    let mut faulty_eip_2930_tx = eip_2930_encoded_tx();
-    let signature = Signature {
-        r: 0x5c4ae1ed01c8df4277f02aa3443f8183ed44627217fd7f27badaed8795906e78,
-        s: 0x4d2af576441428d47c174ffddc6e70b980527a57795b3c87a71878f97ecef274,
-        y_parity: true
-    };
-    let _ = faulty_eip_2930_tx.pop_front();
-
-    let outside_execution = OutsideExecutionBuilderTrait::new(kakarot_core.contract_address)
-        .with_calls(
-            [
-                CallBuilderTrait::new(kakarot_core.contract_address)
-                    .with_calldata(faulty_eip_2930_tx)
-                    .build()
-            ].span()
-        )
-        .build();
-
-    let signature = serialize_transaction_signature(signature, TxType::Eip2930, chain_id()).span();
-
-    let _ = contract_account.execute_from_outside(outside_execution, signature);
-
-    tear_down(contract_account);
-}
 
 #[test]
 #[should_panic(expected: 'KKRT: Multicall not supported')]
diff --git a/crates/utils/src/traits/bytes.cairo b/crates/utils/src/traits/bytes.cairo
index 177b60a7..1de45067 100644
--- a/crates/utils/src/traits/bytes.cairo
+++ b/crates/utils/src/traits/bytes.cairo
@@ -51,7 +51,7 @@ pub impl U8SpanExImpl of U8SpanExTrait {
                 Option::Some(byte) => {
                     let byte: u64 = (*byte.unbox()).into();
                     // Accumulate pending_word in a little endian manner
-                    byte.shl(8_u32 * byte_counter.into())
+                    byte * (256 * byte_counter.into())
                 },
                 Option::None => { break; },
             };