diff --git a/tests/test_block_model.py b/tests/test_block_model.py
index 981a64d7..f2b307de 100644
--- a/tests/test_block_model.py
+++ b/tests/test_block_model.py
@@ -1,3 +1,4 @@
+import pytest
 from pytest import raises
 
 
@@ -253,6 +254,7 @@ class TestBlockModel(object):
         asset_ids = Block.get_asset_ids(block_dict)
         assert asset_ids == [tx.id for tx in txs[:-1]]
 
+    @pytest.mark.bdb
     def test_from_db(self, b):
         from bigchaindb.models import Block, Transaction
 
diff --git a/tests/utils.py b/tests/utils.py
index 53ffd86b..9af72a5d 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -32,6 +32,7 @@ def flush_rethink_db(connection, dbname):
         connection.run(r.db(dbname).table('bigchain').delete())
         connection.run(r.db(dbname).table('backlog').delete())
         connection.run(r.db(dbname).table('votes').delete())
+        connection.run(r.db(dbname).table('assets').delete())
     except r.ReqlOpFailedError:
         pass
 
@@ -41,6 +42,7 @@ def flush_mongo_db(connection, dbname):
     connection.conn[dbname].bigchain.delete_many({})
     connection.conn[dbname].backlog.delete_many({})
     connection.conn[dbname].votes.delete_many({})
+    connection.conn[dbname].assets.delete_many({})
 
 
 @singledispatch