diff --git a/src/internal/netfilter/firewall.go b/src/internal/netfilter/firewall.go
index 0afe453..42372a7 100644
--- a/src/internal/netfilter/firewall.go
+++ b/src/internal/netfilter/firewall.go
@@ -203,7 +203,7 @@ func (f *Firewall) IptSetLanIP() error {
 			return err
 		}
 	}
-	return set.Flush()
+	return nil
 }
 
 func (f *Firewall) IptDeleteLanIP() error {