diff --git a/invokeai/backend/model_manager/config.py b/invokeai/backend/model_manager/config.py
index 1dcfc23ee1..6843a825f8 100644
--- a/invokeai/backend/model_manager/config.py
+++ b/invokeai/backend/model_manager/config.py
@@ -37,6 +37,7 @@ from invokeai.app.util.misc import uuid_string
 from invokeai.backend.model_hash.hash_validator import validate_hash
 from invokeai.backend.model_hash.model_hash import HASHING_ALGORITHMS
 from invokeai.backend.model_manager.model_on_disk import ModelOnDisk
+from invokeai.backend.model_manager.omi import stable_diffusion_xl_1_lora, flux_dev_1_lora
 from invokeai.backend.model_manager.taxonomy import (
     AnyVariant,
     BaseModelType,
@@ -352,15 +353,14 @@ class LoRAOmiConfig(LoRAConfigBase, ModelConfigBase):
     @classmethod
     def parse(cls, mod: ModelOnDisk) -> dict[str, Any]:
         metadata = mod.metadata()
-        base_str, _ = metadata["modelspec.architecture"].split("/")
-        base_str = base_str.lower()
+        architecture = metadata["modelspec.architecture"]
 
-        if "stable-diffusion-xl-v1-base" in base_str:
+        if architecture == stable_diffusion_xl_1_lora:
             base = BaseModelType.StableDiffusionXL
-        elif "flux" in base_str:
+        elif architecture == flux_dev_1_lora:
             base = BaseModelType.Flux
         else:
-            raise InvalidModelConfigException(f"Unrecognised/unsupported base architecture for OMI LoRA: {base_str}")
+            raise InvalidModelConfigException(f"Unrecognised/unsupported architecture for OMI LoRA: {architecture}")
 
         return {"base": base}