diff --git a/coolant_driver.lua b/coolant_driver.lua
index 4f2f561..7b0f779 100644
--- a/coolant_driver.lua
+++ b/coolant_driver.lua
@@ -18,15 +18,11 @@ local function watch(reactor, monitor)
 end
 
 local function report(reactor, monitor)
-    if reactor then
         local value = getValue(reactor)
         local color = color(reactor)
         configureReport(monitor)
         monitor.setBackgroundColor(color)
         monitor.write("Coolant: " .. value .. "%")
-    else
-        return "No reactor found"
-    end
 end
 
 local function configureReport(monitor)
diff --git a/main.lua b/main.lua
index 29af3da..ecb9117 100644
--- a/main.lua
+++ b/main.lua
@@ -27,6 +27,14 @@ local function runDisplay()
 end
 
 local function run()
+    while not reactor do
+        print("Waiting for reactor signal...")
+    end
+
+    while not monitor do
+        print("Waiting for monitor signal...")
+    end
+
     parallel.waitForAll(runMonitors, runDisplay)
 end
 
diff --git a/temperature_driver.lua b/temperature_driver.lua
index 71b8f2a..226d387 100644
--- a/temperature_driver.lua
+++ b/temperature_driver.lua
@@ -14,15 +14,11 @@ local function color(reactor)
 end
 
 local function report(reactor, monitor)
-    if reactor then
         local value = getValue(reactor)
         local color = color(reactor)
         configureReport(monitor)
         monitor.setBackgroundColor(color)
         monitor.write("Coolant: " .. value .. "%")
-    else
-        return "No reactor found"
-    end
 end
 
 local function configureReport(monitor)