diff --git a/node-api/src/main/kotlin/net/corda/nodeapi/internal/bridging/LoopbackBridgeManager.kt b/node-api/src/main/kotlin/net/corda/nodeapi/internal/bridging/LoopbackBridgeManager.kt
index 2dd9f8bff0..ce68cfbd96 100644
--- a/node-api/src/main/kotlin/net/corda/nodeapi/internal/bridging/LoopbackBridgeManager.kt
+++ b/node-api/src/main/kotlin/net/corda/nodeapi/internal/bridging/LoopbackBridgeManager.kt
@@ -136,7 +136,7 @@ class LoopbackBridgeManager(keyStore: CertificateStore,
         private fun clientArtemisMessageHandler(artemisMessage: ClientMessage) {
             logDebugWithMDC { "Loopback Send to ${legalNames.first()} uuid: ${artemisMessage.getObjectProperty(MESSAGE_ID_KEY)}" }
             val peerInbox = translateLocalQueueToInboxAddress(queueName)
-            producer?.send(SimpleString(peerInbox), artemisMessage) { artemisMessage.individualAcknowledge() }
+            producer?.send(SimpleString.of(peerInbox), artemisMessage) { artemisMessage.individualAcknowledge() }
             bridgeMetricsService?.let { metricsService ->
                 val properties = ArtemisMessagingComponent.Companion.P2PMessagingHeaders.whitelistedHeaders.mapNotNull { key ->
                     if (artemisMessage.containsProperty(key)) {