diff --git a/src/agenda_culturel/extractors.py b/src/agenda_culturel/extractors.py
index de4c123..76dd75e 100644
--- a/src/agenda_culturel/extractors.py
+++ b/src/agenda_culturel/extractors.py
@@ -205,6 +205,7 @@ class ExtractorFacebook(Extractor):
                 description=self.get_element("description"),
                 image=self.get_element("image"),
                 image_alt=self.get_element("image_alt"),
+                uuids=[url],
                 reference_urls=[url])
 
 
diff --git a/src/agenda_culturel/forms.py b/src/agenda_culturel/forms.py
index b9149a2..ab27976 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
+from django.forms import ModelForm, ValidationError, TextInput, Form, URLField, MultipleHiddenInput
 from datetime import date
 
 
@@ -19,6 +19,7 @@ class EventForm(ModelForm):
             'start_time': TextInput(attrs={'type': 'time', 'onchange': 'update_datetimes(event);', "onfocus": "this.oldvalue = this.value;"}),
             'end_day': TextInput(attrs={'type': 'date'}),
             'end_time': TextInput(attrs={'type': 'time'}),
+            'uuids': MultipleHiddenInput(),
         }
 
 
diff --git a/src/agenda_culturel/migrations/0015_event_uuids.py b/src/agenda_culturel/migrations/0015_event_uuids.py
new file mode 100644
index 0000000..bddfa15
--- /dev/null
+++ b/src/agenda_culturel/migrations/0015_event_uuids.py
@@ -0,0 +1,19 @@
+# Generated by Django 4.2.7 on 2023-12-23 11:58
+
+from django.db import migrations, models
+import django_better_admin_arrayfield.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('agenda_culturel', '0014_batchimportation_celery_id'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='event',
+            name='uuids',
+            field=django_better_admin_arrayfield.models.fields.ArrayField(base_field=models.CharField(max_length=512), blank=True, help_text='UUIDs from import to detect duplicated entries.', null=True, size=None, verbose_name='UUIDs'),
+        ),
+    ]
diff --git a/src/agenda_culturel/models.py b/src/agenda_culturel/models.py
index 29c2adf..933e4ff 100644
--- a/src/agenda_culturel/models.py
+++ b/src/agenda_culturel/models.py
@@ -123,6 +123,7 @@ class Event(models.Model):
     image = models.URLField(verbose_name=_('Illustration'), help_text=_("URL of the illustration image"), max_length=1024, blank=True, null=True)
     image_alt = models.CharField(verbose_name=_('Illustration description'), help_text=_('Alternative text used by screen readers for the image'), blank=True, null=True, max_length=1024)
 
+    uuids = ArrayField(models.CharField(max_length=512), verbose_name=_('UUIDs'), help_text=_("UUIDs from import to detect duplicated entries."), blank=True, null=True)
     reference_urls = ArrayField(models.URLField(max_length=512), verbose_name=_('URLs'), help_text=_("List of all the urls where this event can be found."), blank=True, null=True)
 
     tags = ArrayField(models.CharField(max_length=64), verbose_name=_('Tags'), help_text=_("A list of tags that describe the event."), blank=True, null=True)
diff --git a/src/agenda_culturel/views.py b/src/agenda_culturel/views.py
index 7025123..4d24df3 100644
--- a/src/agenda_culturel/views.py
+++ b/src/agenda_culturel/views.py
@@ -270,7 +270,7 @@ def import_from_url(request):
 
                 url = ExtractorAllURLs.clean_url(url)
 
-                existing = Event.objects.filter(reference_urls__contains=[url])
+                existing = Event.objects.filter(uuids__contains=[url])
 
                 if len(existing) == 0:
                     event = ExtractorAllURLs.extract(url)
@@ -279,7 +279,7 @@ def import_from_url(request):
                         messages.success(request, _("The event has been successfully extracted, and you can now submit it after modifying it if necessary."))
                         return render(request, 'agenda_culturel/event_form.html', context={'form': form })
                     else:
-                        form = EventForm(initial={'url': [url]})
+                        form = EventForm(initial={'reference_urls': [url]})
                         messages.error(request, _("Unable to extract an event from the proposed URL. Please use the form below to submit the event."))
                         return render(request, 'agenda_culturel/import.html', context={'form': form, 'form_event': form_event})
                 else: