diff --git a/crates/ethereum/payload/src/lib.rs b/crates/ethereum/payload/src/lib.rs
index b803e9a351..a2baad0410 100644
--- a/crates/ethereum/payload/src/lib.rs
+++ b/crates/ethereum/payload/src/lib.rs
@@ -211,6 +211,8 @@ where
 
     let is_osaka = chain_spec.is_osaka_active_at_timestamp(attributes.timestamp);
 
+    let withdrawals_rlp_length = attributes.withdrawals().length();
+
     while let Some(pool_tx) = best_txs.next() {
         // ensure we still have capacity for this transaction
         if cumulative_gas_used + pool_tx.gas_limit() > block_gas_limit {
@@ -232,10 +234,10 @@ where
         // convert tx to a signed transaction
         let tx = pool_tx.to_consensus();
 
-        let estimated_block_size_with_tx = block_transactions_rlp_length +
-            tx.inner().length() +
-            attributes.withdrawals().length() +
-            1024; // 1Kb of overhead for the block header
+        let tx_rlp_len = tx.inner().length();
+
+        let estimated_block_size_with_tx =
+            block_transactions_rlp_length + tx_rlp_len + withdrawals_rlp_length + 1024; // 1Kb of overhead for the block header
 
         if is_osaka && estimated_block_size_with_tx > MAX_RLP_BLOCK_SIZE {
             best_txs.mark_invalid(
@@ -336,7 +338,7 @@ where
             }
         }
 
-        block_transactions_rlp_length += tx.inner().length();
+        block_transactions_rlp_length += tx_rlp_len;
 
         // update and add to total fees
         let miner_fee =