diff --git a/main.go b/main.go
index 18411ca..c96e2c9 100644
--- a/main.go
+++ b/main.go
@@ -12,7 +12,7 @@ import (
 var (
 	flagDebug      = flag.Bool("debug", false, "")
 	flagStandalone = flag.Bool("standalone", false, "")
-	flagComponents = flag.String("components", "micro|rpc|client|server", "")
+	flagComponents = flag.String("components", "micro|rpc|http|client|server", "")
 )
 
 func main() {