diff --git a/core/sing/sing.go b/core/sing/sing.go
index 4075488..f230d49 100644
--- a/core/sing/sing.go
+++ b/core/sing/sing.go
@@ -21,7 +21,6 @@ import (
 	E "github.com/sagernet/sing/common/exceptions"
 	F "github.com/sagernet/sing/common/format"
 	"github.com/sagernet/sing/service"
-	"github.com/sagernet/sing/service/pause"
 )
 
 var _ adapter.Service = (*Box)(nil)