diff --git a/.github/scripts/tests/test_oci_storage_sk.py b/.github/scripts/tests/test_oci_storage_sk.py
index ba88229c..2ba232b0 100644
--- a/.github/scripts/tests/test_oci_storage_sk.py
+++ b/.github/scripts/tests/test_oci_storage_sk.py
@@ -12,7 +12,7 @@ from unittest.mock import Mock, patch
 
 ROOT=Path(__file__).resolve().parents[3]
 sys.path[:0]=[str(ROOT/'oci/src'),str(ROOT/'oci/remote')]
-from proxmenux_oci import cli, custom, custom_mounts, extra_devices, i18n, installer, ui as native_ui, updates
+from proxmenux_oci import catalog_refresh, cli, custom, custom_mounts, extra_devices, i18n, installer, ui as native_ui, updates
 from proxmenux_oci.catalog import Catalog
 
 
@@ -203,7 +203,13 @@ class InputAndCancellationTests(StorageFixture):
     def test_real_menu_error_handler_has_slovak_heading_and_preserves_detail(self):
         ui=Mock();ui.choose.side_effect=['custom',None]
         with patch.object(cli,'interactive_ui',return_value=ui),patch.object(custom,'explore',side_effect=ValueError('fiction-detail')), \
-                patch.object(updates,'UpdateCheck') as checker:
+                patch.object(updates,'UpdateCheck') as checker, \
+                patch.object(catalog_refresh,'CatalogRefresh') as catalog_checker:
+            # Keep this wording/error-handler test offline and free of writes.
+            # The real background worker has its own catalog lifecycle tests.
+            catalog_check=catalog_checker.return_value.__enter__.return_value
+            catalog_check.active=False;catalog_check.consume.return_value=False
+            catalog_check.describe.return_value=''
             check=checker.return_value.__enter__.return_value
             check.active=False;check.notice.return_value='';check.status.return_value={'available':[]}
             self.assertEqual(cli.interactive(self.catalog),0)