diff --git a/planetmint/lib.py b/planetmint/lib.py
index c8f1e05..612f567 100644
--- a/planetmint/lib.py
+++ b/planetmint/lib.py
@@ -22,7 +22,6 @@ except ImportError:
 import requests
 
 import planetmint
-from copy import deepcopy
 from planetmint.config import Config
 from planetmint import backend, config_utils, fastquery
 from planetmint.models import Transaction
diff --git a/tests/backend/tarantool/test_queries.py b/tests/backend/tarantool/test_queries.py
index 7c1a40f..609efef 100644
--- a/tests/backend/tarantool/test_queries.py
+++ b/tests/backend/tarantool/test_queries.py
@@ -16,6 +16,7 @@ pytestmark = pytest.mark.bdb
 def test_get_txids_filtered(signed_create_tx, signed_transfer_tx, db_conn):
     from planetmint.backend.tarantool import query
     from planetmint.models import Transaction
+
     # create and insert two blocks, one for the create and one for the
     # transfer transaction
     create_tx_dict = signed_create_tx.to_dict()
diff --git a/tests/tendermint/test_fastquery.py b/tests/tendermint/test_fastquery.py
index aaa21d9..77579bc 100644
--- a/tests/tendermint/test_fastquery.py
+++ b/tests/tendermint/test_fastquery.py
@@ -118,11 +118,7 @@ def test_outputs_query_key_order(b, user_pk, user_sk, user2_pk, user2_sk):
     assert len(outputs) == 1
 
     # clean the transaction, metdata and asset collection
-    # conn = connect()
     connection = connect()
-    # conn.run(conn.collection('transactions').delete_many({}))
-    # conn.run(conn.collection('metadata').delete_many({}))
-    # conn.run(conn.collection('assets').delete_many({}))
     query.delete_transactions(connection, txn_ids=[tx1.id, tx2.id])
 
     b.store_bulk_transactions([tx1])