diff --git a/app/lib/a_process/pd_csg.c b/app/lib/a_process/pd_csg.c
index 20a488d..9c7f290 100755
--- a/app/lib/a_process/pd_csg.c
+++ b/app/lib/a_process/pd_csg.c
@@ -659,7 +659,7 @@ int32_t _csg_config_get_recv(char *pkt)
             return E_MEM;
         }
         
-        if (_csg_msg_send_dau(slot, DAU_SEND_CFG_GET, data) != E_NONE)
+        if (_csg_msg_send_dau(slot - 1, DAU_SEND_CFG_GET, data) != E_NONE)
         {
             XFREE(MTYPE_CSG, data);
         }