diff --git a/src/ipc.c b/src/ipc.c
index e545417f1..7f8f0668e 100644
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -1140,7 +1140,7 @@ rt_err_t rt_event_recv(rt_event_t   event,
     {
         /* set received event */
         if (recved)
-        	*recved = (event->set & set);
+            *recved = (event->set & set);
 
         /* received event */
         if (option & RT_EVENT_FLAG_CLEAR)