diff --git a/kal/posix/src/mqueue_impl.h b/kal/posix/src/mqueue_impl.h
index d0131a38..daedc0ab 100644
--- a/kal/posix/src/mqueue_impl.h
+++ b/kal/posix/src/mqueue_impl.h
@@ -137,9 +137,5 @@ struct mqpersonal {
     UINT32 mq_status;
     UINT32 mq_refcount;
 };
-#ifdef LOSCFG_BASE_IPC_QUEUE_LIMIT
-#undef LOSCFG_BASE_IPC_QUEUE_LIMIT
-#define LOSCFG_BASE_IPC_QUEUE_LIMIT 20
-#endif
 
 #endif