diff --git a/constant.go b/constant.go
index 6787e5d..6c6ded1 100644
--- a/constant.go
+++ b/constant.go
@@ -1,9 +1,19 @@
 package natsio
 
 var Stream = struct {
-	Selly string
+	Selly      string
+	User       string
+	HelpCenter string
+	Order      string
+	Withdrawal string
+	Jobs       string
 }{
-	Selly: "selly",
+	Selly:      "selly",
+	User:       "user",
+	HelpCenter: "help_center",
+	Order:      "order",
+	Withdrawal: "withdrawal",
+	Jobs:       "jobs",
 }
 
 var SellyServer = struct {
@@ -17,17 +27,3 @@ var SellyServer = struct {
 	SMS:   "sms",
 	Chat:  "chat",
 }
-
-var SellyService = struct {
-	User       string
-	HelpCenter string
-	Order      string
-	Withdrawal string
-	Jobs       string
-}{
-	User:       "user",
-	HelpCenter: "help_center",
-	Order:      "order",
-	Withdrawal: "withdrawal",
-	Jobs:       "jobs",
-}
diff --git a/utils.go b/utils.go
index f04c363..e6930bf 100644
--- a/utils.go
+++ b/utils.go
@@ -21,13 +21,13 @@ func combineStreamAndSubjectName(stream, subject string) string {
 }
 
 // GenerateJetStreamSubject ...
-func GenerateJetStreamSubject(stream, server, service, subject string) string {
-	return fmt.Sprintf("%s.jetstream.%s.%s.%s", stream, server, service, subject)
+func GenerateJetStreamSubject(stream, server, subject string) string {
+	return fmt.Sprintf("%s.jetstream.%s.%s", stream, server, subject)
 }
 
 // GenerateReqrepSubject ...
-func GenerateReqrepSubject(stream, server, service, subject string) string {
-	return fmt.Sprintf("%s.reqrep.%s.%s.%s", stream, server, service, subject)
+func GenerateReqrepSubject(stream, server, subject string) string {
+	return fmt.Sprintf("%s.reqrep.%s.%s", stream, server, subject)
 }
 
 // InterfaceToBytes ...