diff --git a/tests/backend/mongodb/test_schema.py b/tests/backend/mongodb/test_schema.py
index 471cc583..f1a2f428 100644
--- a/tests/backend/mongodb/test_schema.py
+++ b/tests/backend/mongodb/test_schema.py
@@ -35,6 +35,9 @@ def test_init_creates_db_tables_and_indexes():
     indexes = conn.conn[dbname]['assets'].index_information().keys()
     assert sorted(indexes) == ['_id_', 'asset_id', 'text']
 
+    indexes = conn.conn[dbname]['metadata'].index_information().keys()
+    assert sorted(indexes) == ['_id_', 'text', 'transaction_id']
+
 
 def test_init_database_fails_if_db_exists():
     import bigchaindb
diff --git a/tests/utils.py b/tests/utils.py
index 9af72a5d..5b3b5242 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -33,6 +33,7 @@ def flush_rethink_db(connection, dbname):
         connection.run(r.db(dbname).table('backlog').delete())
         connection.run(r.db(dbname).table('votes').delete())
         connection.run(r.db(dbname).table('assets').delete())
+        connection.run(r.db(dbname).table('metadata').delete())
     except r.ReqlOpFailedError:
         pass
 
@@ -43,6 +44,7 @@ def flush_mongo_db(connection, dbname):
     connection.conn[dbname].backlog.delete_many({})
     connection.conn[dbname].votes.delete_many({})
     connection.conn[dbname].assets.delete_many({})
+    connection.conn[dbname].metadata.delete_many({})
 
 
 @singledispatch