diff --git a/tests/performance/tests/blend_load.py b/tests/performance/tests/blend_load.py
index bbadb5c9d89..f2036ea5932 100644
--- a/tests/performance/tests/blend_load.py
+++ b/tests/performance/tests/blend_load.py
@@ -13,7 +13,7 @@ def _run(filepath):
 
     # Load once to ensure it's cached by OS
     bpy.ops.wm.open_mainfile(filepath=filepath)
-    bpy.ops.wm.read_homefile()
+    bpy.ops.wm.read_homefile(use_empty=True, use_factory_startup=True)
 
     # Measure loading the second time
     start_time = time.time()
diff --git a/tests/python/bl_alembic_io_test.py b/tests/python/bl_alembic_io_test.py
index 6b098ab0e6c..f10a9c6f022 100644
--- a/tests/python/bl_alembic_io_test.py
+++ b/tests/python/bl_alembic_io_test.py
@@ -256,7 +256,7 @@ class CameraExportImportTest(unittest.TestCase):
         # Unload the current blend file to release the imported Alembic file.
         # This is necessary on Windows in order to be able to delete the
         # temporary ABC file.
-        bpy.ops.wm.read_homefile()
+        bpy.ops.wm.read_homefile(use_empty=True, use_factory_startup=True)
         self._tempdir.cleanup()
 
     def test_export_hierarchy(self):