diff --git a/kernel/base/los_event.c b/kernel/base/los_event.c
index b2fe8cb291d0cd783c17880b6838e326c524260a..b9d9228e223a5dc3a21134e3baccba00d86ecc11 100644
--- a/kernel/base/los_event.c
+++ b/kernel/base/los_event.c
@@ -214,9 +214,9 @@ LITE_OS_SEC_TEXT STATIC UINT32 OsEventWrite(PEVENT_CB_S eventCB, UINT32 events,
                  ((resumedTask->eventMask & eventCB->uwEventID) == resumedTask->eventMask))) {
                 exitFlag = 1;
                 OsTaskWake(resumedTask, OS_TASK_STATUS_PEND);
-            }
-            if (once == TRUE) {
-                break;
+                if (once == TRUE) {
+                    break;
+                }
             }
             resumedTask = nextTask;
         }