diff --git a/conftest.py b/conftest.py
index a3bd77c..423ab8d 100644
--- a/conftest.py
+++ b/conftest.py
@@ -3,8 +3,30 @@ import pytest
 from django_webtest import DjangoTestApp, WebTestMixin
 
 
+DEFAULT_MARK = object()
+
+
+class SigiTestApp(DjangoTestApp):
+
+    def __init__(self, extra_environ=None, relative_to=None, default_user=None):
+        super(SigiTestApp, self).__init__(extra_environ, relative_to)
+        self.default_user = default_user
+
+    def get(self, url, params=None, headers=None, extra_environ=None,
+            status=None, expect_errors=False, user=DEFAULT_MARK, auto_follow=True,
+            content_type=None, **kwargs):
+            # note we altered the default values for user and auto_follow
+
+        if user is DEFAULT_MARK:  # a trick to allow explicit user=None
+            user = self.default_user
+
+        return super(SigiTestApp, self).get(url, params, headers, extra_environ,
+            status, expect_errors, user, auto_follow,
+            content_type, **kwargs)
+
+
 @pytest.fixture(scope='function')
-def app(request):
+def app(request, admin_user):
     """WebTest's TestApp.
 
     Patch and unpatch settings before and after each test.
@@ -17,4 +39,4 @@ def app(request):
     wtm = WebTestMixin()
     wtm._patch_settings()
     request.addfinalizer(wtm._unpatch_settings)
-    return DjangoTestApp()
+    return SigiTestApp(default_user=admin_user.username)
diff --git a/sigi/apps/parlamentares/test_parlamentares.py b/sigi/apps/parlamentares/test_parlamentares.py
index 1f989f4..e9fc0bc 100644
--- a/sigi/apps/parlamentares/test_parlamentares.py
+++ b/sigi/apps/parlamentares/test_parlamentares.py
@@ -17,16 +17,16 @@ def some_parlamentarians():
     return a, b, c
 
 
-def test_list_all(some_parlamentarians, admin_user, app):
-    response = app.get('/parlamentares/parlamentar/', auto_follow=True, user=admin_user.username)
+def test_list_all(some_parlamentarians, app):
+    response = app.get('/parlamentares/parlamentar/')
     assert response.status_code == 200
 
     for x in some_parlamentarians:
         assert x.nome_completo in response.content
 
 
-def test_list_filtered_by_capital_letter(some_parlamentarians, admin_client):
-    response = admin_client.get('/parlamentares/parlamentar/?nome_completo=B', follow=True)
+def test_list_filtered_by_capital_letter(some_parlamentarians, app):
+    response = app.get('/parlamentares/parlamentar/?nome_completo=B')
     assert response.status_code == 200
 
     decoded_content = response.content.decode('utf-8')
@@ -36,8 +36,8 @@ def test_list_filtered_by_capital_letter(some_parlamentarians, admin_client):
     assert c.nome_completo not in decoded_content
 
 
-def test_add_to_cart(some_parlamentarians, admin_user, app):
-    res = app.get('/parlamentares/parlamentar/', auto_follow=True, user=admin_user.username)
+def test_add_to_cart(some_parlamentarians, app):
+    res = app.get('/parlamentares/parlamentar/')
     assert res.status_code == 200
 
     a, b, c = some_parlamentarians
@@ -47,7 +47,7 @@ def test_add_to_cart(some_parlamentarians, admin_user, app):
     form['action'] = 'adiciona_parlamentar'
     res = form.submit()
     "2 Parlamentares adicionados" in res.content
-    res = app.get('/parlamentares/parlamentar/carrinho/', auto_follow=True, user=admin_user.username)
+    res = app.get('/parlamentares/parlamentar/carrinho/')
 
     def right_people_present(content):
         assert a.nome_completo in content