diff --git a/Ernestophone/settings-example.py b/Ernestophone/settings-example.py
index 91fdd19..b6e83fe 100644
--- a/Ernestophone/settings-example.py
+++ b/Ernestophone/settings-example.py
@@ -16,6 +16,7 @@ BASE_DIR = os.path.dirname(os.path.dirname(__file__))
 EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
 
 MEDIA_URL = '/media/'
+MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
 
 STATIC_URL = '/static/'
 
diff --git a/calendrier/views.py b/calendrier/views.py
index 0033066..4d232a6 100644
--- a/calendrier/views.py
+++ b/calendrier/views.py
@@ -1,4 +1,4 @@
-from django.shortcuts import render, redirect
+from django.shortcuts import render, redirect, get_object_or_404
 from calendrier.forms import ModifEventForm, EventForm, ParticipantsForm, \
         SendMail, ChangeDoodleName
 from calendrier.models import Event, Participants
@@ -69,7 +69,7 @@ def calendar(request, pYear, pMonth):
 
 
 def view_event(request, pYear, pMonth, id):
-    ev = Event.objects.get(id=id)
+    ev = get_object_or_404(Event, id=id)
     if not request.user.is_authenticated() and not ev.calendrier:
         return redirect('calendrier.views.home')
     nom = ev.nom.capitalize
@@ -87,7 +87,7 @@ def view_event(request, pYear, pMonth, id):
 
 
 def view_eventbis(request, id):
-    ev = Event.objects.get(id=id)
+    ev = get_object_or_404(Event, id=id)
     if not request.user.is_authenticated() and not ev.calendrier:
         return redirect('calendrier.views.home')
     part = ev.participants_set.all()
@@ -109,7 +109,7 @@ def resend(request, id):
     if request.method == "POST":
         form = SendMail(request.POST)
         if form.is_valid():
-            ev = Event.objects.get(id=id)
+            ev = get_object_or_404(Event, id=id)
             users = ErnestoUser.objects.filter(is_ernesto=True)
             message = form.cleaned_data["message"]
             try:
@@ -228,7 +228,7 @@ def create_event(request):
 @login_required
 def reponse(request, id):
     part = request.user.profile
-    ev = Event.objects.get(id=id)
+    ev = get_object_or_404(Event, id=id)
     if request.method == "POST":
         form = ParticipantsForm(request.POST)
         if form.is_valid():
@@ -248,8 +248,8 @@ def reponse(request, id):
 
 
 def repouidir(request, codeus, codeev):
-    part = ErnestoUser.objects.get(slug=codeus)
-    ev = Event.objects.get(slug=codeev)
+    part = get_object_or_404(ErnestoUser, slug=codeus)
+    ev = get_object_or_404(Event, slug=codeev)
     try:
         p = Participants.objects.get(event=ev, participant=part)
         p.delete()
@@ -265,8 +265,8 @@ def repouidir(request, codeus, codeev):
 
 
 def reppedir(request, codeus, codeev):
-    part = ErnestoUser.objects.get(slug=codeus)
-    ev = Event.objects.get(slug=codeev)
+    part = get_object_or_404(ErnestoUser, slug=codeus)
+    ev = get_object_or_404(Event, slug=codeev)
     try:
         p = Participants.objects.get(event=ev, participant=part)
         p.delete()
@@ -282,8 +282,8 @@ def reppedir(request, codeus, codeev):
 
 
 def repnondir(request, codeus, codeev):
-    part = ErnestoUser.objects.get(slug=codeus)
-    ev = Event.objects.get(slug=codeev)
+    part = get_object_or_404(ErnestoUser, slug=codeus)
+    ev = get_object_or_404(Event, slug=codeev)
     try:
         p = Participants.objects.get(event=ev, participant=part)
         p.delete()
diff --git a/partitions/views.py b/partitions/views.py
index 3d9c6bf..aa3a74c 100644
--- a/partitions/views.py
+++ b/partitions/views.py
@@ -4,6 +4,7 @@ from django.utils.encoding import smart_str
 from django.forms.models import modelform_factory
 from django.core.files import File
 from django.utils.safestring import mark_safe
+from django.http import Http404
 
 import os
 
@@ -35,7 +36,7 @@ def upload(request, nom, auteur):
                 error = "Le caractère / n'est pas autorisé dans le nom"
                 form = UploadFileForm()
                 return render(request, "partitions/upload.html", locals())
-            mor = PartitionSet.objects.get(nom=nom, auteur=auteur)
+            mor = get_object_or_404(PartitionSet, nom=nom, auteur=auteur)
             partition.morceau = mor
             try:
                 mor.partition_set.get(nom=partition.nom)
@@ -69,7 +70,7 @@ def see(request, nom, auteur, partition_id):
             response["Content-Length"] = myfile.size
         return response
     else:
-        partitions = PartitionSet.objects.get(nom=nom, auteur=auteur)
+        partitions = get_object_or_404(PartitionSet, nom=nom, auteur=auteur)
         part = partitions.partition_set.all()
         return render(request, 'partitions/listepart.html', locals())
 
@@ -113,24 +114,27 @@ def ajouter_morceau(request):
 
 @chef_required
 def delete(request, nom, auteur, id):
-    p = PartitionSet.objects.get(nom=nom, auteur=auteur)
-    part = p.partition_set.get(id=id)
+    p = get_object_or_404(PartitionSet, nom=nom, auteur=auteur)
+    try:
+        part = p.partition_set.get(id=id)
+    except Partition.DoesNotExist:
+        raise Http404
     part.delete()
     suppression = "Partition supprimée"
-    p = PartitionSet.objects.get(nom=nom, auteur=auteur)
+    p.refresh_from_db()
     part = p.partition_set.all()
     return render(request, 'partitions/listepart.html', locals())
 
 
 @chef_required
 def conf_delete(request, nom, auteur, id):
-    part = Partition.objects.get(id=id)
+    part = get_object_or_404(Partition, id=id)
     return render(request, 'partitions/conf_delete.html', locals())
 
 
 @chef_required
 def delete_morc(request, nom, auteur):
-    p = PartitionSet.objects.get(nom=nom, auteur=auteur)
+    p = get_object_or_404(PartitionSet, nom=nom, auteur=auteur)
     part = p.partition_set.all()
     for pa in part:
         pa.delete()
@@ -146,7 +150,7 @@ def conf_delete_morc(request, nom, auteur):
 
 @login_required
 def listepart(request, nom, auteur):
-    p = PartitionSet.objects.get(nom=nom, auteur=auteur)
+    p = get_object_or_404(PartitionSet, nom=nom, auteur=auteur)
     part = p.partition_set.all()
     ChefEditForm = modelform_factory(PartitionSet,
                                      fields=("category", "infos"))
diff --git a/propositions/views.py b/propositions/views.py
index 44a7055..8e45452 100644
--- a/propositions/views.py
+++ b/propositions/views.py
@@ -1,4 +1,4 @@
-from django.shortcuts import render, redirect
+from django.shortcuts import render, redirect, get_object_or_404
 from django.core.urlresolvers import reverse_lazy
 from django.contrib.auth.decorators import login_required
 from django.views.generic import DeleteView
@@ -35,7 +35,7 @@ def liste(request):
 
 @login_required
 def repoui(request, id):
-    prop = Prop.objects.get(id=id)
+    prop = get_object_or_404(Prop, id=id)
     participant = request.user.profile
     try:
         p = Reponses.objects.get(prop=prop, part=participant)
@@ -86,7 +86,7 @@ def test(request, pk):
 
 @login_required
 def repnon(request, id):
-    prop = Prop.objects.get(id=id)
+    prop = get_object_or_404(Prop, id=id)
     participant = request.user.profile
     try:
         p = Reponses.objects.get(prop=prop, part=participant)
@@ -105,4 +105,3 @@ def repnon(request, id):
     prop.nbnon += 1
     prop.save()
     return redirect('propositions.views.liste')
-# Create your views here.