diff --git a/src/api/bridgedWithdraw.js b/src/api/bridgedWithdraw.js
index 56d858ad..07ad1b4f 100644
--- a/src/api/bridgedWithdraw.js
+++ b/src/api/bridgedWithdraw.js
@@ -25,7 +25,7 @@ const endpoint = '/v1/trading/bridgedWithdrawals'
 module.exports = async (dvf, data, authNonce, signature) => {
   const { chain, token, amount, nonce, recipientEthAddress } = validateArg0(data)
 
-  const payload = await dvf.createBridgedWithdrawalPayload({ chain, token, amount, nonce, recipientEthAddress }, authNonce, signature)
+  const payload = await dvf.createBridgedWithdrawalPayload({ chain, token, amount, nonce, ...(recipientEthAddress && {recipientEthAddress}) }, authNonce, signature)
 
   // Force the use of header (instead of payload) for authentication.
   dvf = FP.set('config.useAuthHeader', true, dvf)
diff --git a/src/lib/dvf/createBridgedWithdrawalPayload.js b/src/lib/dvf/createBridgedWithdrawalPayload.js
index 8dbc913f..022c1c49 100644
--- a/src/lib/dvf/createBridgedWithdrawalPayload.js
+++ b/src/lib/dvf/createBridgedWithdrawalPayload.js
@@ -43,8 +43,8 @@ module.exports = async (dvf, data, authNonce, signature) => {
     chain,
     token,
     amount: quantisedAmount,
-    recipientEthAddress,
     tx,
-    nonce: nonce || generateRandomNonceV2()
+    nonce: nonce || generateRandomNonceV2(),
+    ...(recipientEthAddress && { recipientEthAddress }), // optional parameter
   }
 }