diff --git a/tests/python_tests/python_plugin_test.py b/tests/python_tests/python_plugin_test.py
index 1b5b3f5a8..a4f0677d5 100644
--- a/tests/python_tests/python_plugin_test.py
+++ b/tests/python_tests/python_plugin_test.py
@@ -16,7 +16,9 @@ def setup():
 class PointDatasource(mapnik.PythonDatasource):
     def __init__(self):
         super(PointDatasource, self).__init__(
-                envelope = mapnik.Box2d(0,-10,100,110)
+                geometry_type = mapnik.DataGeometryType.Point,
+                envelope = mapnik.Box2d(0,-10,100,110),
+                data_type = mapnik.DataType.Vector
         )
 
     def features(self, query):
@@ -74,7 +76,9 @@ class ConcentricCircles(object):
 class CirclesDatasource(mapnik.PythonDatasource):
     def __init__(self, centre_x=-20, centre_y=0, step=10):
         super(CirclesDatasource, self).__init__(
-                geometry_type=mapnik.DataGeometryType.Polygon
+                geometry_type = mapnik.DataGeometryType.Polygon,
+                envelope = mapnik.Box2d(-180, -90, 180, 90),
+                data_type = mapnik.DataType.Vector
         )
 
         # note that the plugin loader will set all arguments to strings and will not try to parse them