diff --git a/CHANGELOG.md b/CHANGELOG.md
index f52f89c..ce05098 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Fix Wallet.broadcast function, now returns a tx id as a hex string
+
 ## [v0.4.0]
 
 - Add dual license MIT and Apache 2.0
diff --git a/src/bdk.udl b/src/bdk.udl
index aa59942..7ee8e80 100644
--- a/src/bdk.udl
+++ b/src/bdk.udl
@@ -131,7 +131,7 @@ interface Wallet {
   [Throws=BdkError]
   void sync(BdkProgress progress_update, u32? max_address_param);
   [Throws=BdkError]
-  Transaction broadcast([ByRef] PartiallySignedBitcoinTransaction psbt);
+  string broadcast([ByRef] PartiallySignedBitcoinTransaction psbt);
 };
 
 interface PartiallySignedBitcoinTransaction {
diff --git a/src/lib.rs b/src/lib.rs
index a1aacba..9a133cc 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,4 @@
+use bdk::bitcoin::hashes::hex::ToHex;
 use bdk::bitcoin::secp256k1::Secp256k1;
 use bdk::bitcoin::util::psbt::PartiallySignedTransaction;
 use bdk::bitcoin::{Address, Network};
@@ -201,7 +202,7 @@ impl PartiallySignedBitcoinTransaction {
 
 impl WalletHolder<AnyBlockchain> for Wallet {
     fn get_wallet(&self) -> MutexGuard<BdkWallet<AnyBlockchain, AnyDatabase>> {
-        self.wallet_mutex.lock().unwrap()
+        self.wallet_mutex.lock().expect("wallet")
     }
 }
 
@@ -265,11 +266,10 @@ impl Wallet {
             .sync(BdkProgressHolder { progress_update }, max_address_param)
     }
 
-    fn broadcast(&self, psbt: &PartiallySignedBitcoinTransaction) -> Result<Transaction, Error> {
+    fn broadcast(&self, psbt: &PartiallySignedBitcoinTransaction) -> Result<String, Error> {
         let tx = psbt.internal.lock().unwrap().clone().extract_tx();
-        self.get_wallet().broadcast(&tx)?;
-        let tx_details = self.get_wallet().get_tx(&tx.txid(), true)?;
-        Ok(Transaction::from(&tx_details.unwrap()))
+        let txid = self.get_wallet().broadcast(&tx)?;
+        Ok(txid.to_hex())
     }
 }