diff --git a/itou/templates/apply/email/diagoriente_prescriber_invite_body.txt b/itou/templates/apply/email/diagoriente_prescriber_invite_body.txt
index 10f9dcc52c..9e83f6ea48 100644
--- a/itou/templates/apply/email/diagoriente_prescriber_invite_body.txt
+++ b/itou/templates/apply/email/diagoriente_prescriber_invite_body.txt
@@ -1,6 +1,6 @@
 {% extends "layout/base_email_text_body.txt" %}
 {% block body %}
-{% if job_application.sender.title %}Bonjour {{ job_application.sender.get_title_display }} {{ job_application.sender.last_name }},{% else %}Bonjour {{ job_application.sender.get_full_name }},{% endif %}
+{% if job_application.sender.title %}Bonjour {{ job_application.sender.get_title_display }} {{ job_application.sender.last_name|upper }},{% else %}Bonjour {{ job_application.sender.get_full_name }},{% endif %}
 
 {% block header %}L’entreprise {{ job_application.to_company.display_name }} vous propose d’utiliser Diagoriente pour valoriser les expériences de votre candidat : {{ job_application.job_seeker.get_full_name }}.
 Vous pourrez lui créer un compte en cliquant sur ce lien : https://diagoriente.beta.gouv.fr/services/plateforme?utm_source=emploi-inclusion-employeur{% endblock header %}
diff --git a/itou/templates/apply/includes/job_seeker_info.html b/itou/templates/apply/includes/job_seeker_info.html
index a1f86a6f36..0200538543 100644
--- a/itou/templates/apply/includes/job_seeker_info.html
+++ b/itou/templates/apply/includes/job_seeker_info.html
@@ -27,7 +27,7 @@ <h3 class="mb-0">Informations personnelles</h3>
 <ul class="list-data list-data__two-column-md mb-3">
     <li>
         <small>Prénom</small>
-        <strong>{{ job_seeker.first_name|mask_unless:can_view_personal_information }}</strong>
+        <strong>{{ job_seeker.first_name|title|mask_unless:can_view_personal_information }}</strong>
     </li>
     {% if can_view_personal_information %}
         <li>
diff --git a/itou/templates/users/details.html b/itou/templates/users/details.html
index ac74176edb..62836803da 100644
--- a/itou/templates/users/details.html
+++ b/itou/templates/users/details.html
@@ -25,11 +25,11 @@ <h2>Données administratives</h2>
                                 <ul class="list-data">
                                     <li>
                                         <small>Prénom</small>
-                                        <strong>{{ beneficiary.first_name }}</strong>
+                                        <strong>{{ beneficiary.first_name|title }}</strong>
                                     </li>
                                     <li>
                                         <small>Nom</small>
-                                        <strong>{{ beneficiary.last_name }}</strong>
+                                        <strong>{{ beneficiary.last_name|upper }}</strong>
                                     </li>
                                     <li>
                                         <small>Date de naissance</small>
diff --git a/tests/gps/__snapshots__/test_views.ambr b/tests/gps/__snapshots__/test_views.ambr
index 0de9216146..2f40b504e3 100644
--- a/tests/gps/__snapshots__/test_views.ambr
+++ b/tests/gps/__snapshots__/test_views.ambr
@@ -15,7 +15,7 @@
                                       </li>
                                       <li>
                                           <small>Nom</small>
-                                          <strong>Doe</strong>
+                                          <strong>DOE</strong>
                                       </li>
                                       <li>
                                           <small>Date de naissance</small>