diff --git a/core.go b/core.go
index f2e4d13..3e3c316 100644
--- a/core.go
+++ b/core.go
@@ -37,7 +37,7 @@ func NewTimeWheel(slotCount int, interval time.Duration) *TimeWheel {
 		addTaskChannel:    make(chan *Task, 1000),
 		removeTaskChannel: make(chan *Task, 1000),
 		stopChannel:       make(chan bool, 1000),
-		taskRecords:       easymap.NewNormal(true),
+		taskRecords:       easymap.NewNormal(),
 		job:               nil,
 		isRunning:         false,
 	}