diff --git a/lemarche/templates/tenders/_detail_contact.html b/lemarche/templates/tenders/_detail_contact.html
index 504f41f94..11de4b7fa 100644
--- a/lemarche/templates/tenders/_detail_contact.html
+++ b/lemarche/templates/tenders/_detail_contact.html
@@ -14,10 +14,10 @@ <h2>
             {{ tender.contact_full_name|safe }}
         </div>
     {% endif %}
-    {% if tender.author.company_name %}
+    {% if tender.contact_company_name_display %}
         <div class="col-md-6">
             <i class="ri-building-4-line"></i>
-            {{ tender.author.company_name }}
+            {{ tender.contact_company_name_display }}
         </div>
     {% endif %}
     {% if tender.can_display_contact_email or source == "alert" and not tender.response_kind_is_only_external %}
diff --git a/lemarche/tenders/models.py b/lemarche/tenders/models.py
index 1b325c4dd..51a6b10a3 100644
--- a/lemarche/tenders/models.py
+++ b/lemarche/tenders/models.py
@@ -440,6 +440,13 @@ def save(self, *args, **kwargs):
     def contact_full_name(self) -> str:
         return f"{self.contact_first_name} {self.contact_last_name}"
 
+    def contact_company_name_display(self) -> str:
+        if self.contact_company_name:
+            return self.contact_company_name
+        elif self.author.company_name:
+            return self.author.company_name
+        return ""
+
     def sectors_list(self):
         return self.sectors.form_filter_queryset().values_list("name", flat=True)