diff --git a/src/calibre/db/tests/legacy.py b/src/calibre/db/tests/legacy.py
index 4542eb6c8e..b6dee63e4e 100644
--- a/src/calibre/db/tests/legacy.py
+++ b/src/calibre/db/tests/legacy.py
@@ -268,6 +268,7 @@ class LegacyTest(BaseTest):
 
         def f(x, y):  # get_top_level_move_items is broken in the old db on case-insensitive file systems
             x.discard('metadata_db_prefs_backup.json')
+            y.pop('full-text-search.db', None)
             return x, y
         self.assertEqual(f(*db.get_top_level_move_items()), f(*ndb.get_top_level_move_items()))
         d1, d2 = BytesIO(), BytesIO()