diff --git a/burnrate_driver.lua b/burnrate_driver.lua
index d80a0c3..93d5877 100644
--- a/burnrate_driver.lua
+++ b/burnrate_driver.lua
@@ -19,14 +19,14 @@ local function watch()
     end
 end
 
-local function stepUp()
+function stepUp()
     local value = getValue()
     if value < max then
         reactor.setBurnRate(value + rateStep)
     end
 end
 
-local function stepDown()
+function stepDown()
     local value = getValue()
     if value > min then
         reactor.setBurnRate(value - rateStep)
diff --git a/coolant_driver.lua b/coolant_driver.lua
index db42ac3..09e226c 100644
--- a/coolant_driver.lua
+++ b/coolant_driver.lua
@@ -17,8 +17,9 @@ local function watch()
     end
 end
 
-local function checkCoolantLevel()
+function checkCoolantLevel()
     local coolantLevel = getValue()
+    return true
 end
 
 local function report()
diff --git a/temperature_driver.lua b/temperature_driver.lua
index 43f11f5..c147124 100644
--- a/temperature_driver.lua
+++ b/temperature_driver.lua
@@ -19,7 +19,7 @@ local function watch()
         checkTemperature()
     end
 end
-local function checkTemperature()
+function checkTemperature()
     local temperature = getValue()
     local upperThreshold = max - 20
     local lowerThreshold = min + 20