diff --git a/main.lua b/main.lua
index 79e0208..4be1f87 100644
--- a/main.lua
+++ b/main.lua
@@ -758,7 +758,9 @@ end
 function Main()
     Init()
 
-    while true do
+    local sentinel = true
+    while sentinel do
+
         -- Update monitor displays
         if Config.Monitors.InstrumentPanelMonitor then
             displayInstrumentPanel(Config.Monitors.InstrumentPanelMonitor)
@@ -794,6 +796,8 @@ function Main()
                 local configFile = fs.open(Config.ConfigPath, "w+")
                 configFile.write(tableToString(Config))
                 configFile.close()
+
+                sentinel = false
             else
                 return
             end