diff --git a/src/services/agent_ctrl.lua b/src/services/agent_ctrl.lua
index ba395a9..46a94d4 100644
--- a/src/services/agent_ctrl.lua
+++ b/src/services/agent_ctrl.lua
@@ -163,7 +163,7 @@ function _M:query_agent(fd, uid)
 		-- self.f2u[f] 肯定存在；self.f2e[f]不存在，则说明在线，则需要踢下线
 		if not self.f2e[f] then
 			local head = string.pack("H", actionCodes.Sys_kickdown)
-			local bin = MsgPack.pack({body = "该账号已登上其他机器"})
+			local bin = MsgPack.pack({msg = "该账号已登上其他机器"})
 			if #bin > 0 then bin = xxtea.encrypt(bin, XXTEA_KEY) end
 			socket.write(f, netpack.pack(head .. bin))
 			skynet.timeout(10, function ()
--
libgit2 0.21.2