diff --git a/invokeai/backend/model_management/model_manager.py b/invokeai/backend/model_management/model_manager.py
index c8a1405428..8bade9cb04 100644
--- a/invokeai/backend/model_management/model_manager.py
+++ b/invokeai/backend/model_management/model_manager.py
@@ -258,7 +258,8 @@ from .models import (
     ModelConfigBase,
     ModelNotFoundException,
     InvalidModelException,
-    DuplicateModelException, ModelBase,
+    DuplicateModelException,
+    ModelBase,
 )
 
 # We are only starting to number the config file with release 3.
@@ -381,13 +382,7 @@ class ModelManager(object):
         # causing otherwise unreferenced models to be removed from memory
         self._read_models()
 
-    def model_exists(
-        self,
-        model_name: str,
-        base_model: BaseModelType,
-        model_type: ModelType,
-        rescan = False
-    ) -> bool:
+    def model_exists(self, model_name: str, base_model: BaseModelType, model_type: ModelType, rescan=False) -> bool:
         """
         Given a model name, returns True if it is a valid
         identifier.
@@ -540,8 +535,9 @@ class ModelManager(object):
         model_class = MODEL_CLASSES[base_model][model_type]
         return model_class
 
-    def _instantiate(self, model_name: str, base_model: BaseModelType, model_type: ModelType,
-                     submodel_type: SubModelType = None) -> ModelBase:
+    def _instantiate(
+        self, model_name: str, base_model: BaseModelType, model_type: ModelType, submodel_type: SubModelType = None
+    ) -> ModelBase:
         model_config = self._get_model_config(base_model, model_name, model_type)
         model_path, is_submodel_override = self._get_model_path(model_config, submodel_type)
         # FIXME: do non-overriden submodels get the right class?