diff --git a/service.go b/service.go
index fe1d950b..3bf9118f 100644
--- a/service.go
+++ b/service.go
@@ -372,19 +372,71 @@ func (s *service) Run() error {
 	return s.Stop()
 }
 
-type nameIface interface {
-	Name() string
-}
-
 func getNameIndex(n string, ifaces interface{}) int {
-	values, ok := ifaces.([]interface{})
-	if !ok {
-		return 0
-	}
-	for idx, iface := range values {
-		if ifc, ok := iface.(nameIface); ok && ifc.Name() == n {
-			return idx
+	switch values := ifaces.(type) {
+	case []router.Router:
+		for idx, iface := range values {
+			if iface.Name() == n {
+				return idx
+			}
 		}
+	case []register.Register:
+		for idx, iface := range values {
+			if iface.Name() == n {
+				return idx
+			}
+		}
+	case []store.Store:
+		for idx, iface := range values {
+			if iface.Name() == n {
+				return idx
+			}
+		}
+	case []tracer.Tracer:
+		for idx, iface := range values {
+			if iface.Name() == n {
+				return idx
+			}
+		}
+	case []server.Server:
+		for idx, iface := range values {
+			if iface.Name() == n {
+				return idx
+			}
+		}
+	case []config.Config:
+		for idx, iface := range values {
+			if iface.Name() == n {
+				return idx
+			}
+		}
+	case []meter.Meter:
+		for idx, iface := range values {
+			if iface.Name() == n {
+				return idx
+			}
+		}
+	case []broker.Broker:
+		for idx, iface := range values {
+			if iface.Name() == n {
+				return idx
+			}
+		}
+	case []client.Client:
+		for idx, iface := range values {
+			if iface.Name() == n {
+				return idx
+			}
+		}
+		/*
+			case []logger.Logger:
+					for idx, iface := range values {
+						if iface.Name() == n {
+							return idx
+						}
+					}
+		*/
 	}
+
 	return 0
 }
diff --git a/service_test.go b/service_test.go
index 0063727e..582318da 100644
--- a/service_test.go
+++ b/service_test.go
@@ -17,20 +17,18 @@ import (
 	"go.unistack.org/micro/v4/tracer"
 )
 
-type testItem struct {
-	name string
-}
+func TestClient(t *testing.T) {
+	c1 := client.NewClient(options.Name("test1"))
+	c2 := client.NewClient(options.Name("test2"))
 
-func (ti *testItem) Name() string {
-	return ti.name
-}
+	svc := NewService(Client(c1, c2))
+	if err := svc.Init(); err != nil {
+		t.Fatal(err)
+	}
 
-func TestGetNameIndex(t *testing.T) {
-	item1 := &testItem{name: "first"}
-	item2 := &testItem{name: "second"}
-	items := []interface{}{item1, item2}
-	if idx := getNameIndex("second", items); idx != 1 {
-		t.Fatalf("getNameIndex func error, item not found")
+	x1 := svc.Client("test2")
+	if x1.Name() != "test2" {
+		t.Fatal("invalid client")
 	}
 }