diff --git a/kal/posix/src/pthread_cond.c b/kal/posix/src/pthread_cond.c
index 356bc679..d6c02f38 100644
--- a/kal/posix/src/pthread_cond.c
+++ b/kal/posix/src/pthread_cond.c
@@ -245,7 +245,6 @@ int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
         PRINT_ERR("%s: %d failed\n", __FUNCTION__, __LINE__);
     }
 
-    (VOID)LOS_EventClear(&(cond->event), 0);
     ret = (INT32)LOS_EventRead(&(cond->event), 0x0f, LOS_WAITMODE_OR | LOS_WAITMODE_CLR, (UINT32)absTicks);
 
     if (pthread_mutex_lock(mutex) != 0) {