diff --git a/club/forms.py b/club/forms.py
index a00d2132..76d13e2c 100644
--- a/club/forms.py
+++ b/club/forms.py
@@ -22,7 +22,6 @@
 #
 #
 
-from ajax_select.fields import AutoCompleteSelectMultipleField
 from django import forms
 from django.conf import settings
 from django.utils.translation import gettext_lazy as _
@@ -30,6 +29,7 @@ from django.utils.translation import gettext_lazy as _
 from club.models import Club, Mailing, MailingSubscription, Membership
 from core.models import User
 from core.views.forms import SelectDate, SelectDateTime
+from core.views.widgets.select import AutoCompleteSelectMultipleUser
 from counter.models import Counter
 
 
@@ -50,11 +50,12 @@ class MailingForm(forms.Form):
     ACTION_NEW_SUBSCRIPTION = 2
     ACTION_REMOVE_SUBSCRIPTION = 3
 
-    subscription_users = AutoCompleteSelectMultipleField(
-        "users",
+    subscription_users = forms.ModelMultipleChoiceField(
         label=_("Users to add"),
         help_text=_("Search users to add (one or more)."),
         required=False,
+        widget=AutoCompleteSelectMultipleUser,
+        queryset=User.objects.all(),
     )
 
     def __init__(self, club_id, user_id, mailings, *args, **kwargs):
@@ -111,12 +112,7 @@ class MailingForm(forms.Form):
         """Convert given users into real users and check their validity."""
         cleaned_data = super().clean()
         users = []
-        for user_id in cleaned_data["subscription_users"]:
-            user = User.objects.filter(id=user_id).first()
-            if not user:
-                raise forms.ValidationError(
-                    _("One of the selected users doesn't exist"), code="invalid"
-                )
+        for user in cleaned_data["subscription_users"]:
             if not user.email:
                 raise forms.ValidationError(
                     _("One of the selected users doesn't have an email address"),
@@ -180,11 +176,12 @@ class ClubMemberForm(forms.Form):
     error_css_class = "error"
     required_css_class = "required"
 
-    users = AutoCompleteSelectMultipleField(
-        "users",
+    users = forms.ModelMultipleChoiceField(
         label=_("Users to add"),
         help_text=_("Search users to add (one or more)."),
         required=False,
+        widget=AutoCompleteSelectMultipleUser,
+        queryset=User.objects.all(),
     )
 
     def __init__(self, *args, **kwargs):
@@ -238,12 +235,7 @@ class ClubMemberForm(forms.Form):
         """
         cleaned_data = super().clean()
         users = []
-        for user_id in cleaned_data["users"]:
-            user = User.objects.filter(id=user_id).first()
-            if not user:
-                raise forms.ValidationError(
-                    _("One of the selected users doesn't exist"), code="invalid"
-                )
+        for user in cleaned_data["users"]:
             if not user.is_subscribed:
                 raise forms.ValidationError(
                     _("User must be subscriber to take part to a club"), code="invalid"
diff --git a/club/tests.py b/club/tests.py
index e0de344d..ae055bd0 100644
--- a/club/tests.py
+++ b/club/tests.py
@@ -254,7 +254,7 @@ class TestClubModel(TestClub):
         self.client.force_login(self.root)
         response = self.client.post(
             self.members_url,
-            {"users": self.subscriber.id, "role": 3},
+            {"users": [self.subscriber.id], "role": 3},
         )
         self.assertRedirects(response, self.members_url)
         self.subscriber.refresh_from_db()
@@ -266,7 +266,7 @@ class TestClubModel(TestClub):
         response = self.client.post(
             self.members_url,
             {
-                "users": f"|{self.subscriber.id}|{self.krophil.id}|",
+                "users": (self.subscriber.id, self.krophil.id),
                 "role": 3,
             },
         )
@@ -330,7 +330,7 @@ class TestClubModel(TestClub):
         response = self.client.post(
             self.members_url,
             {
-                "users": f"|{self.subscriber.id}|{9999}|",
+                "users": (self.subscriber.id, 9999),
                 "start_date": "12/06/2016",
                 "role": 3,
             },
@@ -629,7 +629,7 @@ class TestMailingForm(TestCase):
             self.mail_url,
             {
                 "action": MailingForm.ACTION_NEW_SUBSCRIPTION,
-                "subscription_users": "|%s|%s|" % (self.comunity.id, self.rbatsbak.id),
+                "subscription_users": (self.comunity.id, self.rbatsbak.id),
                 "subscription_mailing": Mailing.objects.get(email="mde").id,
             },
         )
@@ -715,16 +715,17 @@ class TestMailingForm(TestCase):
             self.mail_url,
             {
                 "action": MailingForm.ACTION_NEW_SUBSCRIPTION,
-                "subscription_users": "|789|",
+                "subscription_users": [789],
                 "subscription_mailing": Mailing.objects.get(email="mde").id,
             },
         )
         assert response.status_code == 200
         self.assertInHTML(
-            _("One of the selected users doesn't exist"), response.content.decode()
+            _("You must specify at least an user or an email address"),
+            response.content.decode(),
         )
 
-        # An user has no email adress
+        # An user has no email address
         self.krophil.email = ""
         self.krophil.save()
 
@@ -782,8 +783,11 @@ class TestMailingForm(TestCase):
             self.mail_url,
             {
                 "action": MailingForm.ACTION_NEW_SUBSCRIPTION,
-                "subscription_users": "|%s|%s|%s|"
-                % (self.comunity.id, self.rbatsbak.id, self.krophil.id),
+                "subscription_users": (
+                    self.comunity.id,
+                    self.rbatsbak.id,
+                    self.krophil.id,
+                ),
                 "subscription_mailing": mde.id,
             },
         )