diff --git a/fcm.go b/fcm.go
index c38a4e0..7895d77 100644
--- a/fcm.go
+++ b/fcm.go
@@ -84,18 +84,18 @@ type ClientConfig struct {
 }
 
 type Client struct {
-	cfg    ClientConfig
-	ts     oauth2.TokenSource
-	hc     *http.Client
-	logger logr.Logger
+	sendEndpoint string
+	ts           oauth2.TokenSource
+	hc           *http.Client
+	logger       logr.Logger
 }
 
 func NewClient(projectId string, cfg ClientConfig, ts oauth2.TokenSource, hc *http.Client, logger logr.Logger) *Client {
 	return &Client{
-		cfg:    cfg,
-		ts:     ts,
-		hc:     hc,
-		logger: logger,
+		sendEndpoint: cfg.SendEndpoint,
+		ts:           ts,
+		hc:           hc,
+		logger:       logger,
 	}
 }
 
@@ -194,7 +194,7 @@ func (c *Client) doSendRequest(ctx context.Context, req SendRequest, loggerEnabl
 		c.logger.Info("sending", "message", data)
 	}
 
-	request, err := http.NewRequest(http.MethodPost, c.cfg.SendEndpoint, bytes.NewReader(data))
+	request, err := http.NewRequest(http.MethodPost, c.sendEndpoint, bytes.NewReader(data))
 	if err != nil {
 		span.SetStatus(codes.Error, err.Error())
 		span.RecordError(err)