diff --git a/src/main/tjava/com/r35157/jupiterperpsalarm/impl/ref/JupiterPerpsAlarmImpl.tjava b/src/main/tjava/com/r35157/jupiterperpsalarm/impl/ref/JupiterPerpsAlarmImpl.tjava
index 16e99b8..2ecf5e7 100644
--- a/src/main/tjava/com/r35157/jupiterperpsalarm/impl/ref/JupiterPerpsAlarmImpl.tjava
+++ b/src/main/tjava/com/r35157/jupiterperpsalarm/impl/ref/JupiterPerpsAlarmImpl.tjava
@@ -16,10 +16,9 @@ public final class JupiterPerpsAlarmImpl {
         try {
             config = Config.parse(args, System.getenv());
         } catch (IllegalArgumentException exception) {
-            System.err.println(exception.getMessage());
             printUsage();
-            System.exit(2);
-            return;
+            String errMsg = "Could not parse configuration for JupiterPerpsAlarm: " + exception.getMessage() + "!";
+            throw new IllegalStateException(errMsg, exception);
         }
 
         if (config.selfTest()) {
@@ -32,9 +31,8 @@ public final class JupiterPerpsAlarmImpl {
         try {
             definitions = AlarmConfigurationParser.parse(config.alarmConfiguration());
         } catch (Exception exception) {
-            System.err.println("Could not load alarm configuration: " + exception.getMessage());
-            System.exit(2);
-            return;
+            String errMsg = "Could not load alarm configuration: " + exception.getMessage() + "!";
+            throw new IllegalStateException(errMsg, exception);
         }
 
         List<AlarmAction> actions = new ArrayList<>();