diff --git a/kal/posix/src/pthread_cond.c b/kal/posix/src/pthread_cond.c
index fde0867882cc609bfa1bdf3f68d8274c5086195e..508ba7dc8e47da7d4c8502ad06008017073366df 100644
--- a/kal/posix/src/pthread_cond.c
+++ b/kal/posix/src/pthread_cond.c
@@ -303,7 +303,6 @@ 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) {