diff --git a/kernel/base/ipc/los_queue.c b/kernel/base/ipc/los_queue.c
index 8fe06ba2ef96642f35132bcded5b4d2fe94e302b..ea78a15d610dc11b5e0c776730b9d0205bb0bc8c 100644
--- a/kernel/base/ipc/los_queue.c
+++ b/kernel/base/ipc/los_queue.c
@@ -251,7 +251,7 @@ STATIC VOID OsQueueBufferOperate(LosQueueCB *queueCB, UINT32 operateType, VOID *
             return;
         }
 
-        *bufferSize = msgDataSize;
+        // *bufferSize = msgDataSize; //useless
     } else {
         if (memcpy_s(queueNode, queueCB->queueSize, bufferAddr, *bufferSize) != EOK) {
             PRINT_ERR("store message failed\n");