diff --git a/symposion/schedule/views.py b/symposion/schedule/views.py
index 35f9e4326c24acbd4d1a3a0c4b8bec988475681e..98771b597088f9913392131f2ee44d182f0ba16e 100644
--- a/symposion/schedule/views.py
+++ b/symposion/schedule/views.py
@@ -1,4 +1,3 @@
-from django.core.exceptions import ObjectDoesNotExist
 from django.http import Http404, HttpResponse
 from django.shortcuts import render, get_object_or_404, redirect
 from django.template import loader, Context
@@ -12,7 +11,7 @@ from symposion.schedule.timetable import TimeTable
 
 def fetch_schedule(slug):
     qs = Schedule.objects.all()
-    
+
     if slug is None:
         if qs.count() > 1:
             raise Http404()
@@ -21,14 +20,14 @@ def fetch_schedule(slug):
             raise Http404()
     else:
         schedule = get_object_or_404(qs, section__slug=slug)
-    
+
     return schedule
 
 
 def schedule_conference(request):
-    
+
     schedules = Schedule.objects.filter(published=True, hidden=False)
-    
+
     sections = []
     for schedule in schedules:
         days_qs = Day.objects.filter(schedule=schedule)
@@ -37,7 +36,7 @@ def schedule_conference(request):
             "schedule": schedule,
             "days": days,
         })
-    
+
     ctx = {
         "sections": sections,
     }
@@ -45,14 +44,14 @@ def schedule_conference(request):
 
 
 def schedule_detail(request, slug=None):
-    
+
     schedule = fetch_schedule(slug)
     if not schedule.published and not request.user.is_staff:
         raise Http404()
-    
+
     days_qs = Day.objects.filter(schedule=schedule)
     days = [TimeTable(day) for day in days_qs]
-    
+
     ctx = {
         "schedule": schedule,
         "days": days,
@@ -62,10 +61,10 @@ def schedule_detail(request, slug=None):
 
 def schedule_list(request, slug=None):
     schedule = fetch_schedule(slug)
-    
+
     presentations = Presentation.objects.filter(section=schedule.section)
     presentations = presentations.exclude(cancelled=True)
-    
+
     ctx = {
         "schedule": schedule,
         "presentations": presentations,
@@ -75,32 +74,32 @@ def schedule_list(request, slug=None):
 
 def schedule_list_csv(request, slug=None):
     schedule = fetch_schedule(slug)
-    
+
     presentations = Presentation.objects.filter(section=schedule.section)
     presentations = presentations.exclude(cancelled=True).order_by("id")
-    
+
     response = HttpResponse(mimetype="text/csv")
     if slug:
         file_slug = slug
     else:
         file_slug = "presentations"
     response["Content-Disposition"] = 'attachment; filename="%s.csv"' % file_slug
-    
+
     response.write(loader.get_template("schedule/schedule_list.csv").render(Context({
         "presentations": presentations,
-        
+
     })))
     return response
 
 
 @login_required
 def schedule_edit(request, slug=None):
-    
+
     if not request.user.is_staff:
         raise Http404()
-    
+
     schedule = fetch_schedule(slug)
-    
+
     days_qs = Day.objects.filter(schedule=schedule)
     days = [TimeTable(day) for day in days_qs]
     ctx = {
@@ -112,12 +111,12 @@ def schedule_edit(request, slug=None):
 
 @login_required
 def schedule_slot_edit(request, slug, slot_pk):
-    
+
     if not request.user.is_staff:
         raise Http404()
-    
+
     slot = get_object_or_404(Slot, day__schedule__section__slug=slug, pk=slot_pk)
-    
+
     if request.method == "POST":
         form = SlotEditForm(request.POST, slot=slot)
         if form.is_valid():
@@ -145,13 +144,13 @@ def schedule_slot_edit(request, slug, slot_pk):
 
 
 def schedule_presentation_detail(request, pk):
-    
+
     presentation = get_object_or_404(Presentation, pk=pk)
     if presentation.slot:
         schedule = presentation.slot.day.schedule
     else:
         schedule = None
-    
+
     ctx = {
         "presentation": presentation,
         "schedule": schedule,