diff --git a/pkg/schedule/schedulers/scheduler_controller.go b/pkg/schedule/schedulers/scheduler_controller.go
index 4d72699b0feb..ba4ba922bc4b 100644
--- a/pkg/schedule/schedulers/scheduler_controller.go
+++ b/pkg/schedule/schedulers/scheduler_controller.go
@@ -67,6 +67,8 @@ func NewController(ctx context.Context, cluster sche.SchedulerCluster, storage e
 
 // Wait waits on all schedulers to exit.
 func (c *Controller) Wait() {
+	c.Lock()
+	defer c.Unlock()
 	c.wg.Wait()
 }