1 files changed, 5 insertions, 5 deletions

diff --git a/src/ipc.c b/src/ipc.c
index 912ff81536..4a6244ac3b 100644
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -606,7 +606,7 @@ RTM_EXPORT(rt_sem_trytake);
 rt_err_t rt_sem_release(rt_sem_t sem)
 {
     rt_base_t level;
-    register rt_bool_t need_schedule;
+    rt_bool_t need_schedule;
 
     /* parameter check */
     RT_ASSERT(sem != RT_NULL);
@@ -1442,7 +1442,7 @@ rt_err_t rt_event_send(rt_event_t event, rt_uint32_t set)
     struct rt_list_node *n;
     struct rt_thread *thread;
     rt_base_t level;
-    register rt_base_t status;
+    rt_base_t status;
     rt_bool_t need_schedule;
 
     /* parameter check */
@@ -1570,7 +1570,7 @@ rt_err_t rt_event_recv(rt_event_t   event,
 {
     struct rt_thread *thread;
     rt_base_t level;
-    register rt_base_t status;
+    rt_base_t status;
 
     /* parameter check */
     RT_ASSERT(event != RT_NULL);
@@ -2491,7 +2491,7 @@ rt_err_t rt_mq_init(rt_mq_t     mq,
                     rt_uint8_t  flag)
 {
     struct rt_mq_message *head;
-    register rt_base_t temp;
+    rt_base_t temp;
 
     /* parameter check */
     RT_ASSERT(mq != RT_NULL);
@@ -2615,7 +2615,7 @@ rt_mq_t rt_mq_create(const char *name,
 {
     struct rt_messagequeue *mq;
     struct rt_mq_message *head;
-    register rt_base_t temp;
+    rt_base_t temp;
 
     RT_ASSERT((flag == RT_IPC_FLAG_FIFO) || (flag == RT_IPC_FLAG_PRIO));