diff --git a/cluster.go b/cluster.go
index 8d4fc1d..3a69a89 100644
--- a/cluster.go
+++ b/cluster.go
@@ -529,7 +529,7 @@ func (c *Cluster) executeTasks() {
 			return
 		case <-c.ctx.Done():
 			return
-		case <-c.workerChan:
+		case c.workerChan <- struct{}{}:
 			if c.usePriority && !c.priority.IsLatest(c.ctx) {
 				time.Sleep(5 * time.Second)
 				continue
diff --git a/once.go b/once.go
index eab1134..493e638 100644
--- a/once.go
+++ b/once.go
@@ -121,8 +121,8 @@ func InitOnce(ctx context.Context, re redis.UniversalClient, keyPrefix string, c
 		keySeparator:     "[:]",
 		timeout:          op.timeout,
 		maxRunCount:      op.maxRunCount,
-		workerChan:       make(chan struct{}, op.maxRunCount),
-		maxWorkers:       op.maxRunCount,
+		workerChan:       make(chan struct{}, op.maxWorkers),
+		maxWorkers:       op.maxWorkers,
 	}
 
 	// 初始化优先级
@@ -289,7 +289,8 @@ func (l *Once) executeTasks() {
 			return
 		case <-l.ctx.Done():
 			return
-		case <-l.workerChan:
+		case l.workerChan <- struct{}{}:
+
 			keys, err := l.redis.BLPop(l.ctx, time.Second*10, l.listKey).Result()
 			if err != nil {
 				if err != redis.Nil {