diff --git a/.changeset/small-hornets-accept.md b/.changeset/small-hornets-accept.md
new file mode 100644
index 000000000000..55242d8c5edd
--- /dev/null
+++ b/.changeset/small-hornets-accept.md
@@ -0,0 +1,5 @@
+---
+"@ledgerhq/coin-stacks": patch
+---
+
+Fix transaction broadcast
diff --git a/libs/coin-modules/coin-stacks/src/bridge/estimateMaxSpendable.ts b/libs/coin-modules/coin-stacks/src/bridge/estimateMaxSpendable.ts
index dfc19e8003da..463bb3f0262d 100644
--- a/libs/coin-modules/coin-stacks/src/bridge/estimateMaxSpendable.ts
+++ b/libs/coin-modules/coin-stacks/src/bridge/estimateMaxSpendable.ts
@@ -5,6 +5,7 @@ import { StacksMainnet } from "@stacks/network";
 import {
   UnsignedTokenTransferOptions,
   estimateTransaction,
+  estimateTransactionByteLength,
   makeUnsignedSTXTokenTransfer,
 } from "@stacks/transactions";
 import BigNumber from "bignumber.js";
@@ -43,7 +44,7 @@ export const estimateMaxSpendable: AccountBridge<Transaction>["estimateMaxSpenda
 
   const tx = await makeUnsignedSTXTokenTransfer(options);
 
-  const [feeEst] = await estimateTransaction(tx.payload);
+  const [feeEst] = await estimateTransaction(tx.payload, estimateTransactionByteLength(tx));
 
   const diff = spendableBalance.minus(new BigNumber(feeEst.fee));
   return diff.gte(0) ? diff : new BigNumber(0);
diff --git a/libs/coin-modules/coin-stacks/src/bridge/prepareTransaction.ts b/libs/coin-modules/coin-stacks/src/bridge/prepareTransaction.ts
index 4e1ed0e7b94d..d8384e8a4858 100644
--- a/libs/coin-modules/coin-stacks/src/bridge/prepareTransaction.ts
+++ b/libs/coin-modules/coin-stacks/src/bridge/prepareTransaction.ts
@@ -6,6 +6,7 @@ import {
   TransactionVersion,
   UnsignedTokenTransferOptions,
   estimateTransaction,
+  estimateTransactionByteLength,
   makeUnsignedSTXTokenTransfer,
 } from "@stacks/transactions";
 import BigNumber from "bignumber.js";
@@ -48,7 +49,7 @@ export const prepareTransaction: AccountBridge<Transaction>["prepareTransaction"
         : AddressVersion.TestnetSingleSig;
     const senderAddress = c32address(addressVersion, tx.auth.spendingCondition!.signer);
 
-    const [fee] = await estimateTransaction(tx.payload);
+    const [fee] = await estimateTransaction(tx.payload, estimateTransactionByteLength(tx));
 
     patch.fee = new BigNumber(fee.fee);
     patch.nonce = await findNextNonce(senderAddress, pendingOperations);