diff --git a/vendor/symposion/schedule/views.py b/vendor/symposion/schedule/views.py
index 07086101e4ed47e3e08640e8143b0f6e2a91aef2..e76a4470d80cea9146a9d9de1ef014d51715edbc 100644
--- a/vendor/symposion/schedule/views.py
+++ b/vendor/symposion/schedule/views.py
@@ -1,13 +1,13 @@
 import json
 import pytz
 
-from django.core.urlresolvers import reverse
 from django.http import Http404, HttpResponse
 from django.shortcuts import render, get_object_or_404, redirect
+from django.urls import reverse
 from django.template import loader, Context
 from django.conf import settings
 
-from django.contrib.auth.models import User
+from django.contrib.auth import get_user_model
 from django.contrib import messages
 from django.contrib.sites.models import Site
 
@@ -21,6 +21,8 @@ from symposion.schedule.timetable import TimeTable
 from symposion.conference.models import Conference
 from pinaxcon.templatetags.lca2018_tags import speaker_photo
 
+User = get_user_model()
+
 
 def fetch_schedule(slug):
     qs = Schedule.objects.all()
@@ -369,7 +371,7 @@ def session_detail(request, session_id):
     if chairs:
         chair = chairs[0].user
     else:
-        if request.user.is_authenticated():
+        if request.user.is_authenticated:
             # did the current user previously try to apply and got rejected?
             if SessionRole.objects.filter(session=session, user=request.user, role=SessionRole.SESSION_ROLE_CHAIR, status=False):
                 chair_denied = True
@@ -380,12 +382,12 @@ def session_detail(request, session_id):
     if runners:
         runner = runners[0].user
     else:
-        if request.user.is_authenticated():
+        if request.user.is_authenticated:
             # did the current user previously try to apply and got rejected?
             if SessionRole.objects.filter(session=session, user=request.user, role=SessionRole.SESSION_ROLE_RUNNER, status=False):
                 runner_denied = True
 
-    if request.method == "POST" and request.user.is_authenticated():
+    if request.method == "POST" and request.user.is_authenticated:
         if not hasattr(request.user, "attendee") or not request.user.attendee.completed_registration:
             response = redirect("guided_registration")
             response["Location"] += "?next=%s" % request.path