diff --git a/drivers/Aqara/aqara-lock/src/init.lua b/drivers/Aqara/aqara-lock/src/init.lua
index 9afe6bb77e..a5b163f7f1 100644
--- a/drivers/Aqara/aqara-lock/src/init.lua
+++ b/drivers/Aqara/aqara-lock/src/init.lua
@@ -23,7 +23,6 @@ local CLOUD_PUBLIC_KEY = "__cloud_public_key"
 local SUPPORTED_ALARM_VALUES = { "damaged", "forcedOpeningAttempt", "unableToLockTheDoor", "notClosedForALongTime",
   "highTemperature", "attemptsExceeded" }
 local SERIAL_NUM_TX = "serial_num_tx"
-local SERIAL_NUM_RX = "serial_num_rx"
 local SEQ_NUM = "seq_num"
 local THRESHOLD_BATTERY = {
   ["aqara.lock.akr011"] = { low = 47, dryout = 28 },  -- K100
@@ -67,7 +66,6 @@ local function comp_supported_alarm_values(last_alarm_values)
 end
 
 local function device_init(self, device)
-  device:set_field(SERIAL_NUM_RX, 0)
   device:set_field(SERIAL_NUM_TX, 1)
   device:set_field(SEQ_NUM, 0)
   local last_alarm_values = device:get_latest_state("main", LockAlarm.ID, LockAlarm.supportedAlarmValues.NAME) or {}
@@ -240,7 +238,6 @@ local function lock_state_handler(driver, device, value, zb_rx)
     if res then
       print(res)
     end
-    device:set_field(SERIAL_NUM_RX, 0)
     device:set_field(SERIAL_NUM_TX, 1)
   elseif shared_key == nil then
     request_generate_shared_key(device)
@@ -252,17 +249,10 @@ local function lock_state_handler(driver, device, value, zb_rx)
     local text = string.sub(msg, 5, string.len(msg))
     local payload = string.sub(text, 4, string.len(text))
     local func_id = toValue(payload, 1, 1) .. "." .. toValue(payload, 2, 1) .. "." .. toValue(payload, 3, 2)
-    local serial_num = toValue(msg, 3, 2)
-    local last_serial_num = device:get_field(SERIAL_NUM_RX) or 0
-
-    if serial_num > last_serial_num then
-      device:set_field(SERIAL_NUM_RX, serial_num)
-      if resource_id[func_id] then
-        resource_id[func_id].event_handler(driver, device, resource_id[func_id].event_name,
-          toValue(payload, 6, string.byte(payload, 5)))
-      end
-    else
-      request_generate_shared_key(device)
+
+    if resource_id[func_id] then
+      resource_id[func_id].event_handler(driver, device, resource_id[func_id].event_name,
+        toValue(payload, 6, string.byte(payload, 5)))
     end
   end
 end