diff --git a/invokeai/app/services/model_install/model_install_default.py b/invokeai/app/services/model_install/model_install_default.py
index d6f9792fe7..9e80c475df 100644
--- a/invokeai/app/services/model_install/model_install_default.py
+++ b/invokeai/app/services/model_install/model_install_default.py
@@ -11,8 +11,8 @@ from shutil import copyfile, copytree, move, rmtree
 from tempfile import mkdtemp
 from typing import Any, Dict, List, Optional, Set, Union
 
+import yaml
 from huggingface_hub import HfFolder
-from omegaconf import DictConfig, OmegaConf
 from pydantic.networks import AnyHttpUrl
 from requests import Session
 
@@ -287,12 +287,13 @@ class ModelInstallService(ModelInstallServiceBase):
 
     def _migrate_yaml(self) -> None:
         db_models = self.record_store.all_models()
+        legacy_models_yaml_path = self._app_config.root_path / "configs" / "models.yaml"
         try:
-            yaml = self._get_yaml()
+            legacy_models_yaml = yaml.safe_load(legacy_models_yaml_path.read_text())
         except OSError:
             return
 
-        yaml_metadata = yaml.pop("__metadata__")
+        yaml_metadata = legacy_models_yaml.pop("__metadata__")
         yaml_version = yaml_metadata.get("version")
 
         if yaml_version != "3.0.0":
@@ -301,11 +302,11 @@ class ModelInstallService(ModelInstallServiceBase):
             )
 
         self._logger.info(
-            f"Starting one-time migration of {len(yaml.items())} models from `models.yaml` to database. This may take a few minutes."
+            f"Starting one-time migration of {len(legacy_models_yaml.items())} models from `models.yaml` to database. This may take a few minutes."
         )
 
-        if len(db_models) == 0 and len(yaml.items()) != 0:
-            for model_key, stanza in yaml.items():
+        if len(db_models) == 0 and len(legacy_models_yaml.items()) != 0:
+            for model_key, stanza in legacy_models_yaml.items():
                 _, _, model_name = str(model_key).split("/")
                 model_path = Path(stanza["path"])
                 if not model_path.is_absolute():
@@ -324,8 +325,7 @@ class ModelInstallService(ModelInstallServiceBase):
                     self._logger.warning(f"Model at {model_path} could not be migrated: {e}")
 
         # Rename `models.yaml` to `models.yaml.bak` to prevent re-migration
-        yaml_path = self._app_config.model_conf_path
-        yaml_path.rename(yaml_path.with_suffix(".yaml.bak"))
+        legacy_models_yaml_path.rename(legacy_models_yaml_path.with_suffix(".yaml.bak"))
 
     def scan_directory(self, scan_dir: Path, install: bool = False) -> List[str]:  # noqa D102
         self._cached_model_paths = {Path(x.path).resolve() for x in self.record_store.all_models()}
@@ -602,16 +602,6 @@ class ModelInstallService(ModelInstallServiceBase):
             self._next_job_id += 1
         return id
 
-    # --------------------------------------------------------------------------------------------
-    # Internal functions that manage the old yaml config
-    # --------------------------------------------------------------------------------------------
-    def _get_yaml(self) -> DictConfig:
-        """Fetch the models.yaml DictConfig for this installation."""
-        yaml_path = self._app_config.model_conf_path
-        omegaconf = OmegaConf.load(yaml_path)
-        assert isinstance(omegaconf, DictConfig)
-        return omegaconf
-
     @staticmethod
     def _guess_variant() -> Optional[ModelRepoVariant]:
         """Guess the best HuggingFace variant type to download."""