diff --git a/core/bus_center/lnn/net_builder/sync_info/src/lnn_sync_item_info.c b/core/bus_center/lnn/net_builder/sync_info/src/lnn_sync_item_info.c
index c5304727adbdf2f558c3ea9be7d543b134f3b510..a2ac53fd6abae7c087d54d615f784e11e5213855 100755
--- a/core/bus_center/lnn/net_builder/sync_info/src/lnn_sync_item_info.c
+++ b/core/bus_center/lnn/net_builder/sync_info/src/lnn_sync_item_info.c
@@ -89,8 +89,8 @@ typedef struct {
 
 typedef struct {
     int32_t channelId;
-    uint8_t *data;
     uint32_t len;
+    uint8_t data[0];
 } ChannelDataMsgPara;
 
 static SyncLedgerItem g_syncLedgerItem;
@@ -464,7 +464,6 @@ static void OnMessageReceived(int32_t channelId, const char *data, uint32_t len)
         return;
     }
     para->channelId = channelId;
-    para->data = (uint8_t *)para + sizeof(ChannelDataMsgPara);
     para->len = len;
     if (memcpy_s(para->data, len, data, len) != SOFTBUS_OK) {
         SoftBusLog(SOFTBUS_LOG_LNN, SOFTBUS_LOG_ERROR, "copy data to msg para fail");