diff --git a/mygrpc/grpc.go b/mygrpc/grpc.go
index 00a135a..b91e3db 100644
--- a/mygrpc/grpc.go
+++ b/mygrpc/grpc.go
@@ -16,7 +16,7 @@ const (
 )
 
 const (
-	ServicePrefix = "grpc-"
+	ServicePrefix = "grpc@"
 )
 
 const (
diff --git a/myhttp/myhttp.go b/myhttp/myhttp.go
index e2f3648..cf18d69 100644
--- a/myhttp/myhttp.go
+++ b/myhttp/myhttp.go
@@ -1,5 +1,5 @@
 package myhttp
 
 const (
-	ServicePrefix = "http-"
+	ServicePrefix = "http@"
 )