diff --git a/antarest/study/service.py b/antarest/study/service.py
index f69c7eace4..24eff03254 100644
--- a/antarest/study/service.py
+++ b/antarest/study/service.py
@@ -2068,7 +2068,7 @@ def delete_link(
         )
         if referencing_binding_constraints:
             binding_ids = [bc.id for bc in referencing_binding_constraints]
-            raise ReferencedObjectDeletionNotAllowed(link_id, binding_ids, object_type="link")
+            raise ReferencedObjectDeletionNotAllowed(link_id, binding_ids, object_type="Link")
         self.links_manager.delete_link(study, area_from, area_to)
         self.event_bus.push(
             Event(