diff --git a/horde_worker_regen/process_management/horde_process.py b/horde_worker_regen/process_management/horde_process.py
index 31743bf0..cbe0a61d 100644
--- a/horde_worker_regen/process_management/horde_process.py
+++ b/horde_worker_regen/process_management/horde_process.py
@@ -3,6 +3,7 @@
 import abc
 import enum
 import signal
+import sys
 import time
 from abc import abstractmethod
 from enum import auto
@@ -207,6 +208,7 @@ def main_loop(self) -> None:
             process_state=HordeProcessState.PROCESS_ENDED,
             info="Process ended",
         )
+        sys.exit(1)
 
 
 def signal_handler(sig: int, frame: object) -> None:
diff --git a/horde_worker_regen/process_management/inference_process.py b/horde_worker_regen/process_management/inference_process.py
index cc80fe4e..1daa1343 100644
--- a/horde_worker_regen/process_management/inference_process.py
+++ b/horde_worker_regen/process_management/inference_process.py
@@ -4,6 +4,7 @@
 import contextlib
 import enum
 import io
+import sys
 import time
 from enum import auto
 
@@ -95,11 +96,13 @@ def __init__(
             self._shared_model_manager = SharedModelManager()
         except Exception as e:
             logger.critical(f"Failed to initialise HordeLib: {type(e).__name__} {e}")
+            sys.exit(1)
 
         try:
             self._checkpoint_loader = HordeCheckpointLoader()
         except Exception as e:
             logger.critical(f"Failed to initialise HordeCheckpointLoader: {type(e).__name__} {e}")
+            sys.exit(1)
 
         if SharedModelManager.manager.compvis is None:
             logger.critical("Failed to initialise SharedModelManager")
@@ -107,7 +110,7 @@ def __init__(
                 process_state=HordeProcessState.PROCESS_ENDED,
                 info="Failed to initialise compvis in SharedModelManager",
             )
-            return
+            sys.exit(1)
 
         if len(SharedModelManager.manager.compvis.available_models) == 0:
             logger.critical("No models available in SharedModelManager")
@@ -115,7 +118,7 @@ def __init__(
                 process_state=HordeProcessState.PROCESS_ENDED,
                 info="No models available in SharedModelManager",
             )
-            return
+            sys.exit(1)
 
         logger.info("HordeInferenceProcess initialised")