diff --git a/appservice/server.go b/appservice/server.go
index 1dc7222..79a8f1a 100644
--- a/appservice/server.go
+++ b/appservice/server.go
@@ -34,6 +34,16 @@ func Start(r *mxlib.Registration, c *Config) (chan error, error) {
 		return nil, err
 	}
 
+	svc_mxid := fmt.Sprintf("@%s:%s", registration.SenderLocalpart, config.MatrixDomain)
+	err = mxRegisterUser(registration.SenderLocalpart)
+	if mxe, ok := err.(*mxlib.MxError); !ok || mxe.ErrCode != "M_USER_IN_USE" {
+		return nil, err
+	}
+	err = mxProfileDisplayname(svc_mxid, "Easybridge")
+	if err != nil {
+		return nil, err
+	}
+
 	router := mux.NewRouter()
 	router.HandleFunc("/_matrix/app/v1/transactions/{txnId}", handleTxn)
 	router.HandleFunc("/transactions/{txnId}", handleTxn)
diff --git a/main.go b/main.go
index 272bb16..105d798 100644
--- a/main.go
+++ b/main.go
@@ -100,7 +100,7 @@ func readRegistration(file string) mxlib.Registration {
 		Url: "http://localhost:8321",
 		AsToken: hex.EncodeToString(rnd[:32]),
 		HsToken: hex.EncodeToString(rnd[32:]),
-		SenderLocalpart: "_ezbr",
+		SenderLocalpart: "_ezbr_",
 		Namespaces: mxlib.RegistrationNamespaceSet{
 			Users: []mxlib.RegistrationNamespace{
 				mxlib.RegistrationNamespace{