diff --git a/example/simplepay/main.go b/example/simplepay/main.go
index 27d56a6..1d17aa5 100644
--- a/example/simplepay/main.go
+++ b/example/simplepay/main.go
@@ -48,7 +48,7 @@ func setupMidtrans() {
 	midclient = midtrans.NewClient()
 	midclient.ServerKey = "VT-server-7CVlR3AJ8Dpkez3k_TeGJQZU"
 	midclient.ClientKey = "VT-client-IKktHiy3aRYHljsw"
-	midclient.ApiEnvType = midtrans.Sandbox
+	midclient.APIEnvType = midtrans.Sandbox
 
 	coreGateway = midtrans.CoreGateway{
 		Client: midclient,