diff --git a/kernel/core/include/tos_completion.h b/kernel/core/include/tos_completion.h
index bbaae49a..dac660f2 100644
--- a/kernel/core/include/tos_completion.h
+++ b/kernel/core/include/tos_completion.h
@@ -83,7 +83,6 @@ __API__ k_err_t tos_completion_pend_timed(k_completion_t *completion, k_tick_t t
  * @attention None
  *
  * @param[in]   completion  pointer to the handler of the completion.
- * @param[in]   timeout     how much time(in k_tick_t) we would like to wait.
  *
  * @return  errcode
  * @retval  #K_ERR_PEND_SCHED_LOCKED          we can wait, but scheduler is locked.
diff --git a/kernel/core/include/tos_priority_queue.h b/kernel/core/include/tos_priority_queue.h
index 4c75ebc1..729cc841 100644
--- a/kernel/core/include/tos_priority_queue.h
+++ b/kernel/core/include/tos_priority_queue.h
@@ -106,8 +106,6 @@ __API__ k_err_t tos_prio_q_destroy(k_prio_q_t *prio_q);
  * @attention if we wanna create a priority queue, we should offer a manager array buffer of which the size can be calculated by TOS_PRIO_Q_MGR_ARRAY_SIZE.
  *
  * @param[in]   prio_q      pointer to the handler of the priority queue.
- * @param[in]   mgr_array   manager array buffer of the priority queue.
- * @param[in]   pool        pool buffer of the priority queue.
  * @param[in]   item_cnt    item count of the priority queue.
  * @param[in]   item_size   size of each item of the priority queue.
  *
diff --git a/kernel/core/include/tos_rwlock.h b/kernel/core/include/tos_rwlock.h
index 6225e8d9..1c56c65b 100644
--- a/kernel/core/include/tos_rwlock.h
+++ b/kernel/core/include/tos_rwlock.h
@@ -69,6 +69,7 @@ __API__ k_err_t tos_rwlock_destroy(k_rwlock_t *rwlock);
  *              and no writers can hold the write-lock.
  *
  * @param[in]   rwlock              the read-write lock.
+ * @param[in]   timeout             how much time(in k_tick_t) we would like to wait.
  *
  * @return  errcode
  * @retval  #K_ERR_NONE                     return successfully.
@@ -110,6 +111,7 @@ __API__ k_err_t tos_rwlock_rpend_try(k_rwlock_t *rwlock);
  *              and no readers can hold the read-lock.
  *
  * @param[in]   rwlock              the read-write lock.
+ * @param[in]   timeout             how much time(in k_tick_t) we would like to wait.
  *
  * @return  errcode
  * @retval  #K_ERR_NONE                             return successfully.