diff --git a/action_check_exists.go b/action_check_exists.go
index 14ae682..bc807f5 100644
--- a/action_check_exists.go
+++ b/action_check_exists.go
@@ -7,10 +7,11 @@ import (
 	"go.mongodb.org/mongo-driver/bson"
 )
 
-func (s Service) IsDeviceIDExisted(ctx context.Context, deviceID string) bool {
+func (s Service) IsDeviceIDExisted(deviceID string) bool {
 	var (
 		col    = s.getDeviceCollection()
 		device = Device{}
+		ctx    = context.Background()
 	)
 
 	if err := col.FindOne(ctx, bson.M{"deviceId": deviceID}).Decode(&device); err != nil {
diff --git a/action_create.go b/action_create.go
index 79a9663..832ae1e 100644
--- a/action_create.go
+++ b/action_create.go
@@ -40,7 +40,7 @@ func (s Service) Create(payload CreateOptions) error {
 	deviceData := payload.newDevice()
 
 	// Find deviceID existed or not
-	if s.IsDeviceIDExisted(ctx, deviceData.DeviceID) {
+	if s.IsDeviceIDExisted(deviceData.DeviceID) {
 		return errors.New("this device is already existed")
 	}