diff --git a/control.go b/control.go
index 52ddcdcc..75eccef1 100644
--- a/control.go
+++ b/control.go
@@ -6,6 +6,7 @@ import (
 	"net/netip"
 	"os"
 	"os/signal"
+	"sync"
 	"syscall"
 
 	"github.com/sirupsen/logrus"