diff --git a/src/agenda_culturel/forms.py b/src/agenda_culturel/forms.py
index 1613ec9..f6fe7d4 100644
--- a/src/agenda_culturel/forms.py
+++ b/src/agenda_culturel/forms.py
@@ -1,4 +1,4 @@
-from django.forms import ModelForm, ValidationError, TextInput, Form, URLField, MultipleHiddenInput, Textarea, CharField, ChoiceField, RadioSelect, MultipleChoiceField
+from django.forms import ModelForm, ValidationError, TextInput, Form, URLField, MultipleHiddenInput, Textarea, CharField, ChoiceField, RadioSelect, MultipleChoiceField, BooleanField, HiddenInput
 from datetime import date
 from django_better_admin_arrayfield.forms.widgets import DynamicArrayWidget
 
@@ -270,3 +270,27 @@ class ModerateForm(ModelForm):
                 if a.question == q and a.valid_event(self.instance):
                     self.fields[q.complete_id()].initial = a.pk
                     break
+
+class CategorisationForm(Form):
+
+    def __init__(self, *args, **kwargs):
+        if "events" in kwargs:
+            events = kwargs.pop('events', None)
+        else:
+            events = []
+            for f in args[0]:
+                logger.warning('fff: ' + f)
+                if '_' not in f:
+                    if f + '_cat' in args[0]:
+                        events.append((Event.objects.get(pk=int(f)), args[0][f + '_cat']))
+
+            # TODO
+        super().__init__(*args, **kwargs)
+
+        for e, c in events:
+            self.fields[str(e.pk)] = BooleanField(initial=False, label=_('Apply category {} to the event {}').format(c, e.title), required=False)
+            self.fields[str(e.pk) + "_cat"] = CharField(initial=c, widget=HiddenInput())
+
+    def get_validated(self):
+        return [(e, self.cleaned_data.get(e + '_cat')) for e in self.fields if '_' not in e and self.cleaned_data.get(e)]
+
diff --git a/src/agenda_culturel/models.py b/src/agenda_culturel/models.py
index 9c4d76d..c6ab41e 100644
--- a/src/agenda_culturel/models.py
+++ b/src/agenda_culturel/models.py
@@ -834,7 +834,7 @@ class CategorisationRule(models.Model):
         permissions = [("apply_categorisationrules", "Apply a categorisation rule")]
         
 
-    # on applique toutes les règles, de la première à la dernière
+    # all rules are applied, starting from the first to the last
     def apply_rules(event):
         rules = CategorisationRule.objects.all().order_by("weight", "pk")
 
@@ -845,6 +845,16 @@ class CategorisationRule(models.Model):
         
         return 0
 
+    def match_rules(event):
+        rules = CategorisationRule.objects.all().order_by("weight", "pk")
+
+        for rule in rules:
+            if rule.match(event):
+                return rule.category
+        
+        return None
+
+
     def match(self, event):
         if self.description_contains:
             if self.desc_exact:
diff --git a/src/agenda_culturel/templates/agenda_culturel/categorise_events_form.html b/src/agenda_culturel/templates/agenda_culturel/categorise_events_form.html
new file mode 100644
index 0000000..595aa7d
--- /dev/null
+++ b/src/agenda_culturel/templates/agenda_culturel/categorise_events_form.html
@@ -0,0 +1,79 @@
+{% extends "agenda_culturel/page.html" %}
+{% load static %}
+{% load utils_extra %}
+{% load cat_extra %}
+{% load event_extra %}
+{% load tag_extra %}
+
+
+{% block title %}Appliquer les catégorisations{% endblock %}
+
+{% block entete_header %}
+<script src="/static/admin/js/vendor/jquery/jquery.js"></script>
+<script src="/static/admin/js/jquery.init.js"></script>
+<link href="{% static 'css/django_better_admin_arrayfield.min.css' %}" type="text/css" media="all" rel="stylesheet">
+<script src="{% static 'js/django_better_admin_arrayfield.min.js' %}"></script>
+{% css_categories %}
+{% endblock %}
+
+{% block content %}
+
+<h1>Appliquer les catégorisations</h1>
+<p>Les règles de catégorisation proposent de modifier comme suit les événements suivants. Sélectionnez les modifications qui vous conviennent.</p>
+
+<form method="post">{% csrf_token %}
+{% for field in form %}
+    {% if not field.is_hidden %}
+    <article>
+        {{ field.errors }}
+        
+        {% with eid=field.auto_id|remove_id_prefix %}
+            {% with event=events|get_item:eid %}
+                {% with altcat=categories|get_item:eid %}
+
+                    <header>
+                        {{ field }} Changer {{ event.category|small_cat }} en {{ altcat|small_cat }} pour l'événement 
+                        <a href="#event-{{ event.id }}" 
+                            aria-label="Fermer" 
+                            class="close" 
+                            data-target="event-{{ event.id }}"
+                            onClick="toggleModal(event)"></a>
+                            <h3>{{ event|picto_status }} {{ event.title }}</h3>
+                        
+                            <p>
+                                {% picto_from_name "map-pin" %}
+                                {{ event.location }}
+                            </p>
+                            <p>
+                                {% picto_from_name "calendar" %}
+                                {% if event.end_day %}du{% else %}le{% endif %}
+                                {% include "agenda_culturel/date-times-inc.html" with event=event %}
+                            </p>
+                    </header>
+                
+                    <div class="body-fixed">{{ event.description |linebreaks }}</div>
+                
+                
+                    <p>
+                        {% for tag in event.tags %}
+                        {{ tag | tag_button }}
+                        {% endfor %}
+                    </p>
+                
+                {% endwith %}
+            {% endwith %}
+        {% endwith %}
+        
+    </article>
+    {% else %}
+        {{ field }}
+    {% endif %}
+{% endfor %}
+<div class="grid">
+    <a href="{% if request.META.HTTP_REFERER %}{{ request.META.HTTP_REFERER }}{% else %}{% url 'categorisation_rules' %}{% endif %}" role="button" class="secondary">Annuler</a>
+    <input type="submit" value="Envoyer">
+</div>
+</form>
+
+
+{% endblock %}
\ No newline at end of file
diff --git a/src/agenda_culturel/templatetags/utils_extra.py b/src/agenda_culturel/templatetags/utils_extra.py
index 2b360ed..2b808be 100644
--- a/src/agenda_culturel/templatetags/utils_extra.py
+++ b/src/agenda_culturel/templatetags/utils_extra.py
@@ -87,4 +87,13 @@ def truncatechars_middle(value, arg):
 
 @register.filter
 def frdate(d):
-    return ('!' + d).replace(" 1 ", " 1er ").replace("!1 ", "!1er ")[1:]
\ No newline at end of file
+    return ('!' + d).replace(" 1 ", " 1er ").replace("!1 ", "!1er ")[1:]
+
+@register.filter
+def get_item(dictionary, key):
+    return dictionary.get(key)
+
+@register.filter
+def remove_id_prefix(value):
+    return int(value.replace("id_", ""))
+    
\ No newline at end of file
diff --git a/src/agenda_culturel/views.py b/src/agenda_culturel/views.py
index f5bb801..6ce93af 100644
--- a/src/agenda_culturel/views.py
+++ b/src/agenda_culturel/views.py
@@ -11,7 +11,7 @@ from django.http import HttpResponseRedirect, HttpResponse, HttpResponseNotFound
 from django.urls import reverse
 import urllib
 
-from .forms import EventSubmissionForm, EventForm, BatchImportationForm, FixDuplicates, SelectEventInList, MergeDuplicates, RecurrentImportForm, CategorisationRuleImportForm, ModerationQuestionForm, ModerationAnswerForm, ModerateForm
+from .forms import EventSubmissionForm, EventForm, BatchImportationForm, FixDuplicates, SelectEventInList, MergeDuplicates, RecurrentImportForm, CategorisationRuleImportForm, ModerationQuestionForm, ModerationAnswerForm, ModerateForm, CategorisationForm
 
 from .models import Event, Category, StaticContent, ContactMessage, BatchImportation, DuplicatedEvents, RecurrentImport, CategorisationRule, remove_accents, ModerationQuestion, ModerationAnswer
 from django.utils import timezone
@@ -895,24 +895,62 @@ class CategorisationRuleDeleteView(SuccessMessageMixin, PermissionRequiredMixin,
 @permission_required('agenda_culturel.apply_categorisationrules')
 def apply_categorisation_rules(request):
 
-    nb = 0
-    for e in Event.objects.filter(category=Category.get_default_category_id()):
-        success = CategorisationRule.apply_rules(e)
-        if success:
-            nb += 1
-            e.save()
+    if request.method == 'POST':
+        form = CategorisationForm(request.POST)
+        if form.is_valid():
+            nb = 0
+            for epk, c in form.get_validated():
+                e = Event.objects.get(pk=epk)
+                logger.warning("cat " + c)
+                cat = Category.objects.get(name=c)
+                e.category = cat
+                e.save()
+                nb += 1
 
+            if nb != 0:
+                if nb == 1:
+                    messages.success(request, _("The rules were successfully applied and 1 event was categorised."))
+                else:
+                    messages.success(request, _("The rules were successfully applied and {} events were categorised.").format(nb))
+            else:
+                messages.info(request, _("The rules were successfully applied and no events were categorised."))
 
-    if nb != 0:
-        if nb == 1:
-            messages.success(request, _("The rules were successfully applied and 1 event was categorised."))
+            return HttpResponseRedirect(reverse_lazy("categorisation_rules"))
         else:
-            messages.success(request, _("The rules were successfully applied and {} events were categorised.").format(nb))
+            return render(request, 'agenda_culturel/categorise_events_form.html', context={'form': form})
     else:
-        messages.info(request, _("The rules were successfully applied and no events were categorised."))
+        # first we check if events are not correctly categorised
+        to_categorise = []
+        for e in Event.objects.exclude(category=Category.get_default_category_id()).filter(start_day__gt=timezone.now().date()):
+            c = CategorisationRule.match_rules(e)
+            if c and c != e.category:
+                to_categorise.append((e, c))
 
 
-    return HttpResponseRedirect(reverse_lazy("categorisation_rules"))
+        # then we apply rules on events without category
+        nb = 0
+        for e in Event.objects.filter(category=Category.get_default_category_id()):
+            success = CategorisationRule.apply_rules(e)
+            if success:
+                nb += 1
+                e.save()
+
+        # set messages
+        if nb != 0:
+            if nb == 1:
+                messages.success(request, _("The rules were successfully applied and 1 event was categorised."))
+            else:
+                messages.success(request, _("The rules were successfully applied and {} events were categorised.").format(nb))
+        else:
+            messages.info(request, _("The rules were successfully applied and no events were categorised."))
+
+        if len(to_categorise) != 0:
+            form = CategorisationForm(events=to_categorise)
+            return render(request, 'agenda_culturel/categorise_events_form.html', context={'form': form, 
+                'events': dict((e.pk, e) for e, c in to_categorise),
+                'categories': dict((e.pk, c) for e, c in to_categorise)})
+        else:
+            return HttpResponseRedirect(reverse_lazy("categorisation_rules"))
     
 
 #########################