diff --git a/confidential-identities/src/main/kotlin/net/corda/confidential/IdentitySyncFlow.kt b/confidential-identities/src/main/kotlin/net/corda/confidential/IdentitySyncFlow.kt
index d27a5f6d18..6d4f6ea522 100644
--- a/confidential-identities/src/main/kotlin/net/corda/confidential/IdentitySyncFlow.kt
+++ b/confidential-identities/src/main/kotlin/net/corda/confidential/IdentitySyncFlow.kt
@@ -20,10 +20,10 @@ object IdentitySyncFlow {
      * recipient, enabling them to verify that identity.
      */
     // TODO: Can this be triggered automatically from [SendTransactionFlow]?
-    class Send(val otherSideSessions: Set<FlowSession>,
+    class Send @JvmOverloads constructor(val otherSideSessions: Set<FlowSession>,
                val tx: WireTransaction,
-               override val progressTracker: ProgressTracker) : FlowLogic<Unit>() {
-        constructor(otherSide: FlowSession, tx: WireTransaction) : this(setOf(otherSide), tx, tracker())
+               override val progressTracker: ProgressTracker = tracker()) : FlowLogic<Unit>() {
+        constructor(otherSide: FlowSession, tx: WireTransaction) : this(setOf(otherSide), tx)
 
         companion object {
             object SYNCING_IDENTITIES : ProgressTracker.Step("Syncing identities")