diff --git a/django/sp_sso/saml/forms.py b/django/sp_sso/saml/forms.py
index 8d87575..9cf0224 100644
--- a/django/sp_sso/saml/forms.py
+++ b/django/sp_sso/saml/forms.py
@@ -107,6 +107,8 @@ class RegistrationForm(forms.Form):
     # supannEtablissement
     s_etablissement  = forms.CharField(
         required=False, max_length=100, label=_("Institution"))
+    invite_unite  = forms.CharField(
+        required=False, label=_("Research entity or unit"), initial='')
     # supannEntiteAffectationPrincipale
     s_entite_affectation_principale = forms.CharField(
         required=False, max_length=100, label=_("Assignment unit"))
diff --git a/django/sp_sso/saml/models.py b/django/sp_sso/saml/models.py
index ea5429b..14bdb55 100644
--- a/django/sp_sso/saml/models.py
+++ b/django/sp_sso/saml/models.py
@@ -20,6 +20,7 @@ class SupAnnUser(AbstractUser):
     s_entite_affectation = models.CharField(max_length=100, default="")
     s_emp_corps = models.CharField(max_length=100, default="")
     s_etablissement = models.CharField(max_length=100, default="")
+    invite_unite = models.CharField(max_length=100, default="")
     s_liste_rouge = models.BooleanField(default=False)
 
     REQUIRED_FIELDS = []
diff --git a/django/sp_sso/saml/utils.py b/django/sp_sso/saml/utils.py
index cc44b49..adcc20b 100644
--- a/django/sp_sso/saml/utils.py
+++ b/django/sp_sso/saml/utils.py
@@ -19,7 +19,7 @@ sso_attributes = [
     'prenom', 'nom', 'email', 'ep_principal_name', 'ep_primary_affiliation',
     'ep_affiliation', 's_etablissement', 's_entite_affectation_principale',
     's_entite_affectation', 's_emp_corps', 'hote_unite', 'hote_etablissement',
-    's_liste_rouge', 'hote_commentaire']
+    's_liste_rouge', 'hote_commentaire', 'invite_unite']
 
 sso_select_attributes = [
     'ep_primary_affiliation', 'hote_unite', 'hote_etablissement']
diff --git a/django/sp_sso/sp_sso/settings.py b/django/sp_sso/sp_sso/settings.py
index 0599688..d983baf 100644
--- a/django/sp_sso/sp_sso/settings.py
+++ b/django/sp_sso/sp_sso/settings.py
@@ -86,6 +86,7 @@ MELLON_ATTRIBUTE_MAPPING = {
     's_entite_affectation' : '{attributes[s_entite_affectation][0]}',
     's_emp_corps' : '{attributes[s_emp_corps][0]}',
     's_liste_rouge' : '{attributes[s_liste_rouge][0]}',
+    'invite_unite' : '{attributes[invite_unite][0]}',
 }
 
 MELLON_SUPERUSER_MAPPING = {
diff --git a/django/sp_sso/templates/declare_form.html b/django/sp_sso/templates/declare_form.html
index 491941c..8407eb0 100644
--- a/django/sp_sso/templates/declare_form.html
+++ b/django/sp_sso/templates/declare_form.html
@@ -18,6 +18,7 @@
     {% include "registration_field.html" with field=form.prenom %}
     {% include "registration_field.html" with field=form.email %}
     {% include "registration_field.html" with field=form.s_etablissement %}
+    {% include "registration_field.html" with field=form.invite_unite %}
     {% include "registration_field.html" with field=form.ep_primary_affiliation %}
     {% include "registration_field.html" with field=form.s_emp_corps %}
     {% include "registration_field.html" with field=form.s_liste_rouge %}