diff --git a/mittest/simple_server/test_special_tablet_flush.cpp b/mittest/simple_server/test_special_tablet_flush.cpp
index ae47641eab..7dd9eaa118 100644
--- a/mittest/simple_server/test_special_tablet_flush.cpp
+++ b/mittest/simple_server/test_special_tablet_flush.cpp
@@ -14,6 +14,7 @@
 #define USING_LOG_PREFIX STORAGE
 #define protected public
 #define private public
+#define UNITTEST
 
 #include "env/ob_simple_cluster_test_base.h"
 #include "storage/tx_storage/ob_ls_service.h"