diff --git a/src/agent.lua b/src/agent.lua
index 803dc18..e7d8350 100644
--- a/src/agent.lua
+++ b/src/agent.lua
@@ -244,8 +244,10 @@ function CMD.start(session, source, gate, fd, ip, hotfixs)
 	agent_util:reset()
 	math.randomInit()
 
-	for _, hotfix in ipairs(hotfixs) do
-		CMD.hotfix(hotfix)
+	if hotfixs then
+		for _, hotfix in ipairs(hotfixs) do
+			CMD.hotfix(hotfix)
+		end
 	end
 
 	-- 这里将消息伪装成 watchdog 发出，这样就由 A->B->C->B->A 变成 A->B->C->A
--
libgit2 0.21.2