diff --git a/tests/db/test_planetmint_api.py b/tests/db/test_planetmint_api.py
index 019ce77..8fa45c1 100644
--- a/tests/db/test_planetmint_api.py
+++ b/tests/db/test_planetmint_api.py
@@ -64,11 +64,11 @@ class TestBigchainApi(object):
 
         # create the transactions
         tx1 = Create.generate([alice.public_key], [([alice.public_key], 1)],
-                                 assets=asset1).sign([alice.private_key])
+                                 assets=[asset1]).sign([alice.private_key])
         tx2 = Create.generate([alice.public_key], [([alice.public_key], 1)],
-                                 assets=asset2).sign([alice.private_key])
+                                 assets=[asset2]).sign([alice.private_key])
         tx3 = Create.generate([alice.public_key], [([alice.public_key], 1)],
-                                 assets=asset3).sign([alice.private_key])
+                                 assets=[asset3]).sign([alice.private_key])
 
         # write the transactions to the DB
         b.store_bulk_transactions([tx1, tx2, tx3])
@@ -97,7 +97,7 @@ class TestBigchainApi(object):
         asset1 = {'msg': 'Planetmint 1'}
 
         tx = Create.generate([alice.public_key], [([alice.public_key], 1)],
-                                assets=asset1).sign([alice.private_key])
+                                assets=[asset1]).sign([alice.private_key])
         b.store_bulk_transactions([tx])
 
         tx_from_db = b.get_transaction(tx.id)
@@ -105,9 +105,9 @@ class TestBigchainApi(object):
         before = tx.to_dict()
         after = tx_from_db.to_dict()
 
-        assert before['asset']['data'] == after['asset']['data']
-        before.pop('asset', None)
-        after.pop('asset', None)
+        assert before['assets'][0]['data'] == after['assets'][0]['data']
+        before.pop('assets', None)
+        after.pop('assets', None)
         assert before == after