diff --git a/service/DiscoveryService.go b/service/DiscoveryService.go
index 8728d04..bbb385f 100644
--- a/service/DiscoveryService.go
+++ b/service/DiscoveryService.go
@@ -6,12 +6,12 @@ import (
 	cda "git.loafle.net/commons/di-go/annotation"
 	cdr "git.loafle.net/commons/di-go/registry"
 	occp "git.loafle.net/overflow/commons-go/config/probe"
+	"git.loafle.net/overflow/commons-go/core/util"
 	ocmd "git.loafle.net/overflow/commons-go/model/discovery"
 	ocsp "git.loafle.net/overflow/commons-go/service/probe"
 
 	// For annotation
 	_ "git.loafle.net/overflow/commons-go/core/annotation"
-	"git.loafle.net/overflow/commons-go/core/util"
 )
 
 var DiscoveryServiceType = reflect.TypeOf((*DiscoveryService)(nil))