diff --git a/invokeai/app/services/model_manager_service.py b/invokeai/app/services/model_manager_service.py
index fd24aca81b..8384a97435 100644
--- a/invokeai/app/services/model_manager_service.py
+++ b/invokeai/app/services/model_manager_service.py
@@ -3,7 +3,7 @@
 
 from abc import ABC, abstractmethod
 from pathlib import Path
-from typing import Union, Callable, types
+from typing import Union, Callable, List, Tuple, types
 from dataclasses import dataclass
 
 from invokeai.backend.model_management.model_manager import (
@@ -67,7 +67,7 @@ class ModelManagerServiceBase(ABC):
         pass
 
     @abstractmethod
-    def default_model(self) -> Union[Tuple(str, SDModelType),None],
+    def default_model(self) -> Union[Tuple(str, SDModelType),None]:
         """
         Returns the name and typeof the default model, or None
         if none is defined.
@@ -352,7 +352,7 @@ class ModelManagerService(ModelManagerServiceBase):
             model_name,
             model_type)
 
-    def default_model(self) -> Union[Tuple(str, SDModelType),None],
+    def default_model(self) -> Union[Tuple(str, SDModelType),None]:
         """
         Returns the name of the default model, or None
         if none is defined.