diff --git a/authentik/stages/invitation/stage.py b/authentik/stages/invitation/stage.py
index 77292d2eb..228be9699 100644
--- a/authentik/stages/invitation/stage.py
+++ b/authentik/stages/invitation/stage.py
@@ -3,6 +3,7 @@ from django.http import HttpRequest, HttpResponse
 from django.shortcuts import get_object_or_404
 
 from authentik.flows.stage import StageView
+from authentik.flows.views import SESSION_KEY_GET
 from authentik.stages.invitation.models import Invitation, InvitationStage
 from authentik.stages.invitation.signals import invitation_used
 from authentik.stages.prompt.stage import PLAN_CONTEXT_PROMPT
@@ -17,13 +18,13 @@ class InvitationStageView(StageView):
     def get(self, request: HttpRequest) -> HttpResponse:
         """Apply data to the current flow based on a URL"""
         stage: InvitationStage = self.executor.current_stage
-        if INVITATION_TOKEN_KEY not in request.GET:
+        if INVITATION_TOKEN_KEY not in request.session.get(SESSION_KEY_GET, {}):
             # No Invitation was given, raise error or continue
             if stage.continue_flow_without_invitation:
                 return self.executor.stage_ok()
             return self.executor.stage_invalid()
 
-        token = request.GET[INVITATION_TOKEN_KEY]
+        token = request.session[SESSION_KEY_GET][INVITATION_TOKEN_KEY]
         invite: Invitation = get_object_or_404(Invitation, pk=token)
         self.executor.plan.context[PLAN_CONTEXT_PROMPT] = invite.fixed_data
         self.executor.plan.context[INVITATION_IN_EFFECT] = True
diff --git a/authentik/stages/invitation/tests.py b/authentik/stages/invitation/tests.py
index 4dec9d12e..8394ab351 100644
--- a/authentik/stages/invitation/tests.py
+++ b/authentik/stages/invitation/tests.py
@@ -4,6 +4,7 @@ from unittest.mock import MagicMock, patch
 from django.test import Client, TestCase
 from django.urls import reverse
 from django.utils.encoding import force_str
+from django.utils.http import urlencode
 from guardian.shortcuts import get_anonymous_user
 from rest_framework.test import APITestCase
 
@@ -116,9 +117,8 @@ class TestUserLoginStage(TestCase):
             base_url = reverse(
                 "authentik_api:flow-executor", kwargs={"flow_slug": self.flow.slug}
             )
-            response = self.client.get(
-                base_url + f"?{INVITATION_TOKEN_KEY}={invite.pk.hex}"
-            )
+            args = urlencode({INVITATION_TOKEN_KEY: invite.pk.hex})
+            response = self.client.get(base_url + f"?query={args}")
 
         session = self.client.session
         plan: FlowPlan = session[SESSION_KEY_PLAN]