diff --git a/model/message.go b/model/message.go
index 566545e..e622a54 100644
--- a/model/message.go
+++ b/model/message.go
@@ -186,10 +186,18 @@ func (t *Timeline) Insert(mi *Message) int {
 
 	// check that we haven't seen this message before (this has no impact on p2p messages, but is essential for
 	// group messages)
-	idx, exists := t.signatureCache[base64.StdEncoding.EncodeToString(mi.Signature)]
-	if exists {
-		t.Messages[idx].Acknowledged = true
-		return idx
+	// FIXME: The below code now checks if the message has a signature. If it doesn't then skip duplication check.
+	// We do this because p2p messages right now do not have a signature, and so many p2p messages are not stored
+	// with a signature. In the future in hybrid groups this check will go away as all timelines will use the same
+	// underlying protocol.
+	// This is currently safe to do because p2p does not rely on signatures and groups will verify the signature of
+	// messages prior to generating an event to include them in the timeline.
+	if len(mi.Signature) != 0 {
+		idx, exists := t.signatureCache[base64.StdEncoding.EncodeToString(mi.Signature)]
+		if exists {
+			t.Messages[idx].Acknowledged = true
+			return idx
+		}
 	}
 
 	// update the message store
diff --git a/testing/cwtch_peer_server_integration_test.go b/testing/cwtch_peer_server_integration_test.go
index ff63524..c95eb8f 100644
--- a/testing/cwtch_peer_server_integration_test.go
+++ b/testing/cwtch_peer_server_integration_test.go
@@ -383,6 +383,7 @@ func TestCwtchPeerIntegration(t *testing.T) {
 		t.Errorf("Alice's timeline does not have all messages")
 	} else {
 		// check message 0,1,2,3
+		alicesGroup.Timeline.Sort()
 		aliceGroupTimeline := alicesGroup.GetTimeline()
 		if aliceGroupTimeline[0].Message != aliceLines[0] || aliceGroupTimeline[1].Message != bobLines[0] ||
 			aliceGroupTimeline[2].Message != aliceLines[1] || aliceGroupTimeline[3].Message != bobLines[1] {
@@ -394,6 +395,7 @@ func TestCwtchPeerIntegration(t *testing.T) {
 		t.Errorf("Bob's timeline does not have all messages")
 	} else {
 		// check message 0,1,2,3,4,5
+		bobsGroup.Timeline.Sort()
 		bobGroupTimeline := bobsGroup.GetTimeline()
 		if bobGroupTimeline[0].Message != aliceLines[0] || bobGroupTimeline[1].Message != bobLines[0] ||
 			bobGroupTimeline[2].Message != aliceLines[1] || bobGroupTimeline[3].Message != bobLines[1] ||
@@ -406,6 +408,7 @@ func TestCwtchPeerIntegration(t *testing.T) {
 		t.Errorf("Carol's timeline does not have all messages")
 	} else {
 		// check message 0,1,2,3,4,5
+		carolsGroup.Timeline.Sort()
 		carolGroupTimeline := carolsGroup.GetTimeline()
 		if carolGroupTimeline[0].Message != aliceLines[0] || carolGroupTimeline[1].Message != bobLines[0] ||
 			carolGroupTimeline[2].Message != aliceLines[1] || carolGroupTimeline[3].Message != bobLines[1] ||