diff --git a/planetmint/web/views/outputs.py b/planetmint/web/views/outputs.py
index d481b35..23c5487 100644
--- a/planetmint/web/views/outputs.py
+++ b/planetmint/web/views/outputs.py
@@ -32,4 +32,4 @@ class OutputListApi(Resource):
                     "Invalid output ({}): {} : {} - {}".format(type(e).__name__, e, args["public_key"], args["spent"]),
                     level="error",
                 )
-            return [{"transaction_id": output.txid, "output_index": output.output} for output in outputs]
+            return [{"transaction_id": output.transaction_id, "output_index": output.index} for output in outputs]
diff --git a/tests/web/test_outputs.py b/tests/web/test_outputs.py
index 3a4fc09..ebb758e 100644
--- a/tests/web/test_outputs.py
+++ b/tests/web/test_outputs.py
@@ -16,8 +16,8 @@ OUTPUTS_ENDPOINT = "/api/v1/outputs/"
 @pytest.mark.userfixtures("inputs")
 def test_get_outputs_endpoint(client, user_pk):
     m = MagicMock()
-    m.txid = "a"
-    m.output = 0
+    m.transaction_id = "a"
+    m.index = 0
     with patch("planetmint.model.dataaccessor.DataAccessor.get_outputs_filtered") as gof:
         gof.return_value = [m, m]
         res = client.get(OUTPUTS_ENDPOINT + "?public_key={}".format(user_pk))
@@ -28,8 +28,8 @@ def test_get_outputs_endpoint(client, user_pk):
 
 def test_get_outputs_endpoint_unspent(client, user_pk):
     m = MagicMock()
-    m.txid = "a"
-    m.output = 0
+    m.transaction_id = "a"
+    m.index = 0
     with patch("planetmint.model.dataaccessor.DataAccessor.get_outputs_filtered") as gof:
         gof.return_value = [m]
         params = "?spent=False&public_key={}".format(user_pk)
@@ -43,8 +43,8 @@ def test_get_outputs_endpoint_unspent(client, user_pk):
 @pytest.mark.userfixtures("inputs")
 def test_get_outputs_endpoint_spent(client, user_pk):
     m = MagicMock()
-    m.txid = "a"
-    m.output = 0
+    m.transaction_id = "a"
+    m.index = 0
     with patch("planetmint.model.dataaccessor.DataAccessor.get_outputs_filtered") as gof:
         gof.return_value = [m]
         params = "?spent=true&public_key={}".format(user_pk)