diff --git a/invokeai/backend/model_manager/config.py b/invokeai/backend/model_manager/config.py
index 986a95d00e..e007dcb4bd 100644
--- a/invokeai/backend/model_manager/config.py
+++ b/invokeai/backend/model_manager/config.py
@@ -275,7 +275,7 @@ class ModelConfigBase(ABC, BaseModel):
 
 
 class UnknownModelConfig(ModelConfigBase):
-    base: Literal[BaseModelType.Any] = BaseModelType.Any
+    base: Literal[BaseModelType.Unknown] = BaseModelType.Unknown
     type: Literal[ModelType.Unknown] = ModelType.Unknown
     format: Literal[ModelFormat.Unknown] = ModelFormat.Unknown
 
diff --git a/invokeai/backend/model_manager/taxonomy.py b/invokeai/backend/model_manager/taxonomy.py
index 120b4a4dd9..07f8c8f5de 100644
--- a/invokeai/backend/model_manager/taxonomy.py
+++ b/invokeai/backend/model_manager/taxonomy.py
@@ -33,6 +33,7 @@ class BaseModelType(str, Enum):
     FluxKontext = "flux-kontext"
     Veo3 = "veo3"
     Runway = "runway"
+    Unknown = "unknown"
 
 
 class ModelType(str, Enum):