diff --git a/bind.go b/bind.go
index a4d29d8..408b685 100644
--- a/bind.go
+++ b/bind.go
@@ -51,7 +51,7 @@ func (b *Bind) Open(port uint16) (fns []conn.ReceiveFunc, actualPort uint16, err
 
 	settingEngine := webrtc.SettingEngine{}
 	if mux.WithUDPMux != nil {
-		b.mux = try.To1(mux.WithUDPMux(settingEngine, &port))
+		b.mux = try.To1(mux.WithUDPMux(&settingEngine, &port))
 		actualPort = port
 	}
 	b.api = webrtc.NewAPI(webrtc.WithSettingEngine(settingEngine))
diff --git a/mux/mux.go b/mux/mux.go
index ca736b2..00203fc 100644
--- a/mux/mux.go
+++ b/mux/mux.go
@@ -5,4 +5,4 @@ import (
 	"github.com/pion/webrtc/v3"
 )
 
-var WithUDPMux func(engine webrtc.SettingEngine, port *uint16) (ice.UDPMux, error)
+var WithUDPMux func(engine *webrtc.SettingEngine, port *uint16) (ice.UDPMux, error)
diff --git a/mux/mux_std.go b/mux/mux_std.go
index 437b76e..e7cc084 100644
--- a/mux/mux_std.go
+++ b/mux/mux_std.go
@@ -11,7 +11,7 @@ import (
 )
 
 func init() {
-	WithUDPMux = func(engine webrtc.SettingEngine, port *uint16) (mux ice.UDPMux, err error) {
+	WithUDPMux = func(engine *webrtc.SettingEngine, port *uint16) (mux ice.UDPMux, err error) {
 		if err = initPort(port); err != nil {
 			return
 		}