diff --git a/src/interface/dss_api.h b/src/interface/dss_api.h
index 039a0b6ae49b2f2f1b5fb6c23f40e6612564cc29..d0189db8a4bfa28d6a97c4d8d22b1750f3c764d5 100644
--- a/src/interface/dss_api.h
+++ b/src/interface/dss_api.h
@@ -210,7 +210,7 @@ DSS_DECLARE void dss_show_version(char *version);
 DSS_DECLARE void dss_show_version(char *version);
 DSS_DECLARE void dss_register_exit_callback(dss_exit_callback_t dss_exit_proc);
 // upgrade
-int dss_enable_upgrades(void);
+DSS_DECLARE int dss_enable_upgrades(void);
 
 #ifdef __cplusplus
 }
diff --git a/src/service/dss_mes.c b/src/service/dss_mes.c
index 558c359a971e24d34f17869de87a6ebdabc9b5a0..eb5b8652be090911c27fe2e2ee3619ec89e00983 100644
--- a/src/service/dss_mes.c
+++ b/src/service/dss_mes.c
@@ -359,13 +359,13 @@ void dss_proc_broadcast_req(dss_session_t *session, mes_msg_t *msg)
         dss_send_bcast_ack_common(&bcast_ctx, ERR_DSS_UNSUPPORTED_CMD);
         return;
     }
-    dss_bcast_hdl_t *boc_handler = &g_dss_bcast_handle[req_head->type];
-    if (boc_handler->proc_func == NULL) {
+    dss_bcast_hdl_t *bcast_handler = &g_dss_bcast_handle[req_head->type];
+    if (bcast_handler->proc_func == NULL) {
         dss_send_bcast_ack_common(&bcast_ctx, ERR_DSS_UNSUPPORTED_CMD);
         return;
     }
-    status_t ret = boc_handler->proc_func(session, &bcast_ctx);
-    if (boc_handler->need_ack) {
+    status_t ret = bcast_handler->proc_func(session, &bcast_ctx);
+    if (bcast_handler->need_ack) {
         dss_send_bcast_ack(&bcast_ctx, ret);
     }
 }
@@ -929,9 +929,8 @@ status_t dss_sync_bcast(dss_bcast_req_head_t *req, uint32 req_size, void *ack_ms
             community.version_not_match_inst = 0;
             // if msg has been changed, need rewrite req
             continue;
-        } else {
-            break;
         }
+        break;
     } while (CM_TRUE);
     if (ret != CM_SUCCESS) {
         LOG_RUN_ERR("[DSS]: Failed to notify other dss instance, cmd: %u, errcode:%d, "