diff --git a/core-tests/src/os/async.cpp b/core-tests/src/os/async.cpp
index f1163e7df1e..8dad920991e 100644
--- a/core-tests/src/os/async.cpp
+++ b/core-tests/src/os/async.cpp
@@ -78,7 +78,7 @@ TEST(async, schedule) {
             count--;
             if (count == 0) {
                 swoole_timer_del(timer);
-                ASSERT_EQ(SwooleTG.async_threads->get_worker_num(), 128);
+                ASSERT_GT(SwooleTG.async_threads->get_worker_num(), 16);
                 ASSERT_GT(SwooleTG.async_threads->get_queue_size(), 100);
                 ASSERT_GT(SwooleTG.async_threads->get_task_num(), 100);
                 break;