diff --git a/supervisor/alarm_ctl.lua b/supervisor/alarm_ctl.lua
index 9ebf410..d238fd9 100644
--- a/supervisor/alarm_ctl.lua
+++ b/supervisor/alarm_ctl.lua
@@ -35,7 +35,7 @@ local alarm_ctl = {}
 alarm_ctl.AISTATE = AISTATE
 alarm_ctl.AISTATE_NAMES = AISTATE_NAMES
 
--- update an alarm state given conditions
+-- update an alarm state based on its current status and if it is tripped
 ---@param caller_tag string tag to use in log messages
 ---@param alarm_states { [ALARM]: ALARM_STATE } unit instance
 ---@param tripped boolean if the alarm condition is sti ll active
diff --git a/supervisor/unit.lua b/supervisor/unit.lua
index e2bb4f9..507ebcd 100644
--- a/supervisor/unit.lua
+++ b/supervisor/unit.lua
@@ -3,14 +3,14 @@ local rsio       = require("scada-common.rsio")
 local types      = require("scada-common.types")
 local util       = require("scada-common.util")
 
-local alarmctl   = require("supervisor.alarm_ctl")
+local alarm_ctl  = require("supervisor.alarm_ctl")
 local logic      = require("supervisor.unitlogic")
 
 local plc        = require("supervisor.session.plc")
 local rsctl      = require("supervisor.session.rsctl")
 local svsessions = require("supervisor.session.svsessions")
 
-local AISTATE       = alarmctl.AISTATE
+local AISTATE       = alarm_ctl.AISTATE
 
 local ALARM         = types.ALARM
 local ALARM_STATE   = types.ALARM_STATE