diff --git a/internal/asterisk/call.go b/internal/asterisk/call.go
index 88eee26..a9c9bde 100644
--- a/internal/asterisk/call.go
+++ b/internal/asterisk/call.go
@@ -122,7 +122,9 @@ func dialWithClient(ctx context.Context, client ari.Client, request NativeDial)
 	if call.subscription == nil {
 		return nil, &NativeCallFailure{Phase: "subscribe", Cause: errors.New("native ARI channel subscription unavailable before origination")}
 	}
-	call.outbound, err = client.Channel().Originate(key, originate)
+	// The reference key is an existing originator, not the new channel ID.
+	// ChannelID in originate already fixes this call's identity.
+	call.outbound, err = client.Channel().Originate(nil, originate)
 	if err != nil {
 		// The HTTP response can be lost after Asterisk has created the
 		// channel. Do not originate again: try to stop the same identity.
diff --git a/internal/asterisk/call_test.go b/internal/asterisk/call_test.go
index a89ede9..e3d51bc 100644
--- a/internal/asterisk/call_test.go
+++ b/internal/asterisk/call_test.go
@@ -36,6 +36,7 @@ type testChannels struct {
 	ari.Channel
 	events       chan ari.Event
 	originate    ari.OriginateRequest
+	originateRef *ari.Key
 	media        ari.ExternalMediaOptions
 	issued       int
 	originateErr error
@@ -44,8 +45,9 @@ type testChannels struct {
 	mediaPeerIP  string
 }
 
-func (c *testChannels) Originate(_ *ari.Key, request ari.OriginateRequest) (*ari.ChannelHandle, error) {
+func (c *testChannels) Originate(reference *ari.Key, request ari.OriginateRequest) (*ari.ChannelHandle, error) {
 	c.issued++
+	c.originateRef = reference
 	c.originate = request
 	if c.originateErr != nil {
 		return nil, c.originateErr
@@ -143,6 +145,7 @@ func TestNativeCallUsesOneARIOriginateAndActualRTPBridge(t *testing.T) {
 	}
 	if call.Media == nil || client.channels.issued != 1 || client.channels.originate.Endpoint != "PJSIP/708915000000001@shuqi" ||
 		client.channels.originate.CallerID != "BD1234" || client.channels.originate.ChannelID != "exec-1" ||
+		client.channels.originateRef != nil || client.channels.originate.Originator != "" ||
 		client.channels.media.Format != "slin16" || client.channels.media.App != "go-sip-agent" ||
 		len(client.bridges.attached) != 2 || client.bridges.attached[0] != "exec-1" {
 		t.Fatal("native channel/ExternalMedia was not attached exactly once to the approved bridge")