diff --git a/event/common.go b/event/common.go
index 2680365..a6f24e9 100644
--- a/event/common.go
+++ b/event/common.go
@@ -44,6 +44,7 @@ const (
 	// Peer acknowledges a previously sent message
 	// attributes
 	// EventID: The original event id that the peer is responding too.
+	// RemotePeer: The peer associated with the acknowledgement
 	PeerAcknowledgement = Type("PeerAcknowledgement")
 
 	// attributes:
diff --git a/protocol/connections/engine.go b/protocol/connections/engine.go
index 50036de..126e26b 100644
--- a/protocol/connections/engine.go
+++ b/protocol/connections/engine.go
@@ -135,10 +135,10 @@ func (e *engine) eventHandler() {
 func (e *engine) createPeerTemplate() *PeerApp {
 	peerAppTemplate := new(PeerApp)
 	peerAppTemplate.MessageHandler = e.handlePeerMessage
-	peerAppTemplate.OnAcknowledgement =  e.ignoreOnShutdown(e.peerAck)
-	peerAppTemplate.OnAuth =  e.ignoreOnShutdown(e.peerAuthed)
-	peerAppTemplate.OnConnecting =  e.ignoreOnShutdown(e.peerConnecting)
-	peerAppTemplate.OnClose =  e.ignoreOnShutdown(e.peerDisconnected)
+	peerAppTemplate.OnAcknowledgement = e.ignoreOnShutdown2(e.peerAck)
+	peerAppTemplate.OnAuth = e.ignoreOnShutdown(e.peerAuthed)
+	peerAppTemplate.OnConnecting = e.ignoreOnShutdown(e.peerConnecting)
+	peerAppTemplate.OnClose = e.ignoreOnShutdown(e.peerDisconnected)
 	return peerAppTemplate
 }
 
@@ -163,14 +163,26 @@ func (e *engine) Shutdown() {
 // needs to be run in a goroutine as will block on Open.
 func (e *engine) peerWithOnion(onion string) {
 	e.ignoreOnShutdown(e.peerConnecting)(onion)
-	_,err := e.service.Connect(onion, e.createPeerTemplate())
+	_, err := e.service.Connect(onion, e.createPeerTemplate())
 	if err != nil {
 		e.ignoreOnShutdown(e.peerDisconnected)(onion)
 	}
 }
 
-func (e * engine) ignoreOnShutdown(f func(string)) func(string){
-	return func (x string) {if !e.shuttingDown{f(x)} }
+func (e *engine) ignoreOnShutdown(f func(string)) func(string) {
+	return func(x string) {
+		if !e.shuttingDown {
+			f(x)
+		}
+	}
+}
+
+func (e *engine) ignoreOnShutdown2(f func(string, string)) func(string, string) {
+	return func(x, y string) {
+		if !e.shuttingDown {
+			f(x, y)
+		}
+	}
 }
 
 func (e *engine) peerAuthed(onion string) {
@@ -187,9 +199,10 @@ func (e *engine) peerConnecting(onion string) {
 	}))
 }
 
-func (e *engine) peerAck(eventID string) {
+func (e *engine) peerAck(onion string, eventID string) {
 	e.eventManager.Publish(event.NewEvent(event.PeerAcknowledgement, map[event.Field]string{
-		event.EventID: eventID,
+		event.EventID:    eventID,
+		event.RemotePeer: onion,
 	}))
 }
 
diff --git a/protocol/connections/peerapp.go b/protocol/connections/peerapp.go
index 6c6e063..09a946a 100644
--- a/protocol/connections/peerapp.go
+++ b/protocol/connections/peerapp.go
@@ -13,7 +13,7 @@ type PeerApp struct {
 	applications.AuthApp
 	connection        *tapir.Connection
 	MessageHandler    func(string, []byte)
-	OnAcknowledgement func(string)
+	OnAcknowledgement func(string, string)
 	OnAuth            func(string)
 	OnClose           func(string)
 	OnConnecting      func(string)
@@ -64,7 +64,7 @@ func (pa PeerApp) listen() {
 		err := json.Unmarshal(message, &peerMessage)
 		if err == nil {
 			if peerMessage.Context == event.ContextAck {
-				pa.OnAcknowledgement(peerMessage.ID)
+				pa.OnAcknowledgement(pa.connection.Hostname, peerMessage.ID)
 			} else {
 				pa.MessageHandler(pa.connection.Hostname, peerMessage.Data)
 			}