diff --git a/component/sniffer/dispatcher.go b/component/sniffer/dispatcher.go
index 9d47d36f..5ca44f06 100644
--- a/component/sniffer/dispatcher.go
+++ b/component/sniffer/dispatcher.go
@@ -19,6 +19,7 @@ import (
 var (
 	ErrorUnsupportedSniffer = errors.New("unsupported sniffer")
 	ErrorSniffFailed        = errors.New("all sniffer failed")
+	ErrNoClue               = errors.New("not enough information for making a decision")
 )
 
 var Dispatcher SnifferDispatcher
diff --git a/component/sniffer/tls_sniffer.go b/component/sniffer/tls_sniffer.go
index 6af0b97b..f5a8fd99 100644
--- a/component/sniffer/tls_sniffer.go
+++ b/component/sniffer/tls_sniffer.go
@@ -11,7 +11,6 @@ import (
 var (
 	errNotTLS         = errors.New("not TLS header")
 	errNotClientHello = errors.New("not client hello")
-	ErrNoClue         = errors.New("not enough information for making a decision")
 )
 
 type TLSSniffer struct {