diff --git a/reactor-plc/plc.lua b/reactor-plc/plc.lua
index b5d36b5..9620636 100644
--- a/reactor-plc/plc.lua
+++ b/reactor-plc/plc.lua
@@ -429,7 +429,7 @@ plc.comms = function (id, version, modem, local_port, server_port, reactor, rps,
     -- keep alive ack
     ---@param srv_time integer
     local _send_keep_alive_ack = function (srv_time)
-        _send(SCADA_MGMT_TYPES.KEEP_ALIVE, { srv_time, util.time() })
+        _send_mgmt(SCADA_MGMT_TYPES.KEEP_ALIVE, { srv_time, util.time() })
     end
 
     -- general ack
diff --git a/reactor-plc/startup.lua b/reactor-plc/startup.lua
index 8a2d296..062db60 100644
--- a/reactor-plc/startup.lua
+++ b/reactor-plc/startup.lua
@@ -13,7 +13,7 @@ local config = require("reactor-plc.config")
 local plc = require("reactor-plc.plc")
 local threads = require("reactor-plc.threads")
 
-local R_PLC_VERSION = "alpha-v0.7.1"
+local R_PLC_VERSION = "alpha-v0.7.2"
 
 local print = util.print
 local println = util.println