diff --git a/modules/safe.py b/modules/safe.py
index af019ffd9..9014043c6 100644
--- a/modules/safe.py
+++ b/modules/safe.py
@@ -37,6 +37,9 @@ class RestrictedUnpickler(pickle.Unpickler):
             if res is not None:
                 return res
 
+        class Empty:
+            pass
+
         if module == 'collections' and name == 'OrderedDict':
             return getattr(collections, name)
         if module == 'torch._utils' and name in ['_rebuild_tensor_v2', '_rebuild_parameter', '_rebuild_device_tensor_from_numpy']:
@@ -51,12 +54,8 @@ class RestrictedUnpickler(pickle.Unpickler):
             return getattr(numpy, name)
         if module == '_codecs' and name == 'encode':
             return encode
-        if module == "pytorch_lightning.callbacks" and name == 'model_checkpoint':
-            import pytorch_lightning.callbacks
-            return pytorch_lightning.callbacks.model_checkpoint
-        if module == "pytorch_lightning.callbacks.model_checkpoint" and name == 'ModelCheckpoint':
-            import pytorch_lightning.callbacks.model_checkpoint
-            return pytorch_lightning.callbacks.model_checkpoint.ModelCheckpoint
+        if module.startswith("pytorch_lightning"):
+            return Empty
         if module == "__builtin__" and name == 'set':
             return set