diff --git a/hc/front/tests/test_add_matrix.py b/hc/front/tests/test_add_matrix.py
new file mode 100644
index 00000000..0927d7bc
--- /dev/null
+++ b/hc/front/tests/test_add_matrix.py
@@ -0,0 +1,28 @@
+from hc.api.models import Channel
+from hc.test import BaseTestCase
+from mock import patch
+
+
+class AddMatrixTestCase(BaseTestCase):
+    def setUp(self):
+        super(AddMatrixTestCase, self).setUp()
+        self.url = "/projects/%s/add_matrix/" % self.project.code
+
+    def test_instructions_work(self):
+        self.client.login(username="alice@example.org", password="password")
+        r = self.client.get(self.url)
+        self.assertContains(r, "Integration Settings", status_code=200)
+
+    @patch("hc.front.forms.requests.post")
+    def test_it_works(self, mock_post):
+        mock_post.return_value.json.return_value = {"room_id": "fake-room-id"}
+
+        form = {"alias": "!foo:example.org"}
+        self.client.login(username="alice@example.org", password="password")
+        r = self.client.post(self.url, form)
+        self.assertRedirects(r, self.channels_url)
+
+        c = Channel.objects.get()
+        self.assertEqual(c.kind, "matrix")
+        self.assertEqual(c.value, "fake-room-id")
+        self.assertEqual(c.project, self.project)
diff --git a/hc/front/urls.py b/hc/front/urls.py
index 6800bc18..a8589c4d 100644
--- a/hc/front/urls.py
+++ b/hc/front/urls.py
@@ -44,7 +44,6 @@ channel_urls = [
     path("add_whatsapp/", views.add_whatsapp, name="hc-add-whatsapp"),
     path("add_trello/", views.add_trello, name="hc-add-trello"),
     path("add_trello/settings/", views.trello_settings, name="hc-trello-settings"),
-    path("add_matrix/", views.add_matrix, name="hc-add-matrix"),
     path("add_apprise/", views.add_apprise, name="hc-add-apprise"),
     path("add_msteams/", views.add_msteams, name="hc-add-msteams"),
     path("add_prometheus/", views.add_prometheus, name="hc-add-prometheus"),
@@ -75,6 +74,7 @@ urlpatterns = [
     path("integrations/", include(channel_urls)),
     path("projects/<uuid:code>/integrations/", views.channels, name="hc-p-channels"),
     path("projects/<uuid:code>/add_email/", views.add_email, name="hc-add-email"),
+    path("projects/<uuid:code>/add_matrix/", views.add_matrix, name="hc-add-matrix"),
     path("projects/<uuid:code>/add_webhook/", views.add_webhook, name="hc-add-webhook"),
     path("docs/", views.serve_doc, name="hc-docs"),
     path("docs/api/", views.docs_api, name="hc-docs-api"),
diff --git a/hc/front/views.py b/hc/front/views.py
index d5bf270a..c8b861d6 100644
--- a/hc/front/views.py
+++ b/hc/front/views.py
@@ -1457,14 +1457,15 @@ def add_trello(request):
 
 
 @login_required
-def add_matrix(request):
+def add_matrix(request, code):
     if settings.MATRIX_ACCESS_TOKEN is None:
         raise Http404("matrix integration is not available")
 
+    project = _get_project_for_user(request, code)
     if request.method == "POST":
         form = AddMatrixForm(request.POST)
         if form.is_valid():
-            channel = Channel(project=request.project, kind="matrix")
+            channel = Channel(project=project, kind="matrix")
             channel.value = form.cleaned_data["room_id"]
 
             # If user supplied room alias instead of ID, use it as channel name
@@ -1476,13 +1477,13 @@ def add_matrix(request):
 
             channel.assign_all_checks()
             messages.success(request, "The Matrix integration has been added!")
-            return redirect("hc-channels")
+            return redirect("hc-p-channels", project.code)
     else:
         form = AddMatrixForm()
 
     ctx = {
         "page": "channels",
-        "project": request.project,
+        "project": project,
         "form": form,
         "matrix_user_id": settings.MATRIX_USER_ID,
     }
diff --git a/templates/front/channels.html b/templates/front/channels.html
index 35df0379..55f60ae1 100644
--- a/templates/front/channels.html
+++ b/templates/front/channels.html
@@ -223,7 +223,7 @@
             <h2>Matrix</h2>
             <p>Post notifications to a Matrix room.</p>
 
-            <a href="{% url 'hc-add-matrix' %}" class="btn btn-primary">Add Integration</a>
+            <a href="{% url 'hc-add-matrix' project.code %}" class="btn btn-primary">Add Integration</a>
         </li>
         {% endif %}