diff --git a/testapp/urls.py b/testapp/urls.py
index f7782af..53d8199 100644
--- a/testapp/urls.py
+++ b/testapp/urls.py
@@ -3,4 +3,16 @@
 
 from .api import router
 
-urlpatterns = [path("admin/", admin.site.urls), path("api/", include(router.urls))]
+notifications_patterns = [
+    path("kanalen/", lambda request: request, name="kanalen"),
+]
+
+
+urlpatterns = [
+    path("admin/", admin.site.urls),
+    path("api/", include(router.urls)),
+    path(
+        "notifications/",
+        include((notifications_patterns, "notifications"), namespace="notifications"),
+    ),
+]
diff --git a/tests/test_register_kanalen.py b/tests/test_register_kanalen.py
index 59e8b1c..58d32fe 100644
--- a/tests/test_register_kanalen.py
+++ b/tests/test_register_kanalen.py
@@ -1,21 +1,26 @@
 from io import StringIO
-from unittest.mock import Mock, patch
+from unittest.mock import Mock
 from urllib.parse import urlencode
 
 from django.test.testcases import call_command
 
 import pytest
+from furl import furl
 
 from notifications_api_common.kanalen import KANAAL_REGISTRY, Kanaal
 
+from .conftest import NOTIFICATIONS_API_ROOT
+
 
 @pytest.fixture
 def override_kanalen():
 
     kanalen = set(
         (
-            Kanaal(label="foobar", main_resource=Mock()),
-            Kanaal(label="boofar", main_resource=Mock()),
+            Kanaal(
+                label="foobar", main_resource=Mock(), kenmerken=("kenmerk1", "kenmerk2")
+            ),
+            Kanaal(label="boofar", main_resource=Mock(), kenmerken=("kenmerk1",)),
         )
     )
 
@@ -43,14 +48,7 @@ def test_register_kanalen_success(
         status_code=201,
     )
 
-    reverse_patch = (
-        "notifications_api_common.management.commands.register_kanalen.reverse"
-    )
-
-    with patch(reverse_patch) as mocked_reverse:
-        mocked_reverse.return_value = "/notifications/kanalen"
-
-        call_command("register_kanalen", kanalen=["foobar"])
+    call_command("register_kanalen", kanalen=["foobar"])
 
     assert len(requests_mock.request_history) == 2
 
@@ -78,7 +76,7 @@ def test_register_kanalen_from_registry_success(
     requests_mock.post(
         kanaal_url,
         json={
-            "url": "http://example.com",
+            "url": f"{NOTIFICATIONS_API_ROOT}kanalen/1",
             "naam": "foobar",
             "documentatieLink": "http://example.com",
             "filters": ["string"],
@@ -89,7 +87,7 @@ def test_register_kanalen_from_registry_success(
     requests_mock.post(
         kanaal_url,
         json={
-            "url": "http://example.com",
+            "url": f"{NOTIFICATIONS_API_ROOT}kanalen/2",
             "naam": "boofar",
             "documentatieLink": "http://example.com",
             "filters": ["string"],
@@ -97,14 +95,7 @@ def test_register_kanalen_from_registry_success(
         status_code=201,
     )
 
-    reverse_patch = (
-        "notifications_api_common.management.commands.register_kanalen.reverse"
-    )
-
-    with patch(reverse_patch) as mocked_reverse:
-        mocked_reverse.return_value = "/notifications/kanalen"
-
-        call_command("register_kanalen")
+    call_command("register_kanalen")
 
     assert len(requests_mock.request_history) == 4
 
@@ -127,30 +118,84 @@ def test_register_kanalen_existing_kanalen(
     notifications_config, requests_mock, override_kanalen
 ):
     """
-    Test that already registered kanalen does not cause issues
+    Test that already registered kanalen are updated
     """
     kanaal_url = f"{notifications_config.notifications_api_service.api_root}kanaal"
-    params = urlencode(dict(naam="foobar"))
 
     requests_mock.get(
-        f"{kanaal_url}?{params}",
+        furl(kanaal_url).set({"naam": "foobar"}).url,
         json=[
             {
-                "url": "http://example.com",
+                "url": f"{NOTIFICATIONS_API_ROOT}kanalen/1",
                 "naam": "foobar",
-                "documentatieLink": "http://example.com",
+                "documentatieLink": "http://old.example.com",
+                "filters": ["string"],
+            }
+        ],
+    )
+    requests_mock.put(
+        f"{NOTIFICATIONS_API_ROOT}kanalen/1",
+        json=[
+            {
+                "url": f"{NOTIFICATIONS_API_ROOT}kanalen/1",
+                "naam": "foobar",
+                "documentatieLink": "http://old.example.com",
                 "filters": ["string"],
             }
         ],
     )
 
-    call_command("register_kanalen", kanalen=["foobar"])
+    requests_mock.get(
+        furl(kanaal_url).set({"naam": "boofar"}).url,
+        json=[
+            {
+                "url": f"{NOTIFICATIONS_API_ROOT}kanalen/2",
+                "naam": "foobar",
+                "documentatieLink": "http://old.example.com",
+                "filters": [],
+            }
+        ],
+    )
+    requests_mock.put(
+        f"{NOTIFICATIONS_API_ROOT}kanalen/2",
+        json=[
+            {
+                "url": f"{NOTIFICATIONS_API_ROOT}kanalen/2",
+                "naam": "foobar",
+                "documentatieLink": "http://old.example.com",
+                "filters": [],
+            }
+        ],
+    )
 
-    assert len(requests_mock.request_history) == 1
+    call_command("register_kanalen")
 
-    request = requests_mock.request_history[0]
+    assert len(requests_mock.request_history) == 4
 
-    assert request._request.url == f"{kanaal_url}?{params}"
+    get_request1, put_request1, get_request2, put_request2 = (
+        requests_mock.request_history
+    )
+    assert get_request1.method == "GET"
+    assert get_request1.url == furl(kanaal_url).set({"naam": "boofar"}).url
+
+    assert put_request1.method == "PUT"
+    assert put_request1.url == f"{NOTIFICATIONS_API_ROOT}kanalen/2"
+    assert put_request1.json() == {
+        "naam": "boofar",
+        "documentatieLink": "https://example.com/notifications/kanalen/#boofar",
+        "filters": ["kenmerk1"],
+    }
+
+    assert get_request2.method == "GET"
+    assert get_request2.url == furl(kanaal_url).set({"naam": "foobar"}).url
+
+    assert put_request2.method == "PUT"
+    assert put_request2.url == f"{NOTIFICATIONS_API_ROOT}kanalen/1"
+    assert put_request2.json() == {
+        "naam": "foobar",
+        "documentatieLink": "https://example.com/notifications/kanalen/#foobar",
+        "filters": ["kenmerk1", "kenmerk2"],
+    }
 
 
 @pytest.mark.django_db
@@ -190,14 +235,7 @@ def test_register_kanalen_incorrect_post(
 
     stderr = StringIO()
 
-    reverse_patch = (
-        "notifications_api_common.management.commands.register_kanalen.reverse"
-    )
-
-    with patch(reverse_patch) as mocked_reverse:
-        mocked_reverse.return_value = "/notifications/kanalen"
-
-        call_command("register_kanalen", kanalen=["foobar"], stderr=stderr)
+    call_command("register_kanalen", kanalen=["foobar"], stderr=stderr)
 
     partial_failure_message = "Unable to create kanaal foobar"