diff --git a/transport/internet/kcp/connection.go b/transport/internet/kcp/connection.go
index b46ebc92..19b44ca5 100644
--- a/transport/internet/kcp/connection.go
+++ b/transport/internet/kcp/connection.go
@@ -147,9 +147,10 @@ func (v *Updater) Run() {
 		if v.shouldTerminate() {
 			return
 		}
+		interval := v.Interval()
 		for v.shouldContinue() {
 			v.updateFunc()
-			time.Sleep(v.Interval())
+			time.Sleep(interval)
 		}
 	}
 }