diff --git a/workerpool.go b/workerpool.go
index 6eb20be..221497d 100644
--- a/workerpool.go
+++ b/workerpool.go
@@ -143,7 +143,7 @@ func (wp *WorkerPool) Close() error {
 		return nil
 	}
 	wp.closed = true
-	close(wp.tasks)
 	wp.wg.Wait()
+	close(wp.tasks)
 	return nil
 }