diff --git a/tests/storage/test_directory.py b/tests/storage/test_directory.py

index 49c41700f6..c4c321dda6 100644
--- a/tests/storage/test_directory.py
+++ b/tests/storage/test_directory.py
@@ -27,12 +27,13 @@ class DirectoryStoreTestCase(unittest.TestCase):
 
     @defer.inlineCallbacks
     def setUp(self):
+        db_pool = SQLiteMemoryDbPool()
+        yield db_pool.prepare()
+
         hs = HomeServer("test",
-            db_pool=SQLiteMemoryDbPool(),
+            db_pool=db_pool,
         )
 
-        yield hs.get_db_pool().prepare()
-
         self.store = DirectoryStore(hs)
 
         self.room = hs.parse_roomid("!abcde:test")