diff --git a/app/scodoc/sco_edit_ue.py b/app/scodoc/sco_edit_ue.py
index 33a40c06..5c61b64a 100644
--- a/app/scodoc/sco_edit_ue.py
+++ b/app/scodoc/sco_edit_ue.py
@@ -778,11 +778,17 @@ du programme" (menu "Semestre") si vous avez un semestre en cours);
             msg_refcomp = "changer"
         H.append(f"""<ul><li>{descr_refcomp}""")
         if current_user.has_permission(Permission.ScoChangeFormation):
-            H.append(
-                f"""<a class="stdlink" href="{url_for('notes.refcomp_assoc_formation', 
-        scodoc_dept=g.scodoc_dept, formation_id=formation_id)
-        }">{msg_refcomp}</a>"""
-            )
+            if (
+                formation.referentiel_competence is None
+                or formation.formsemestres.count() == 0
+            ):
+                H.append(
+                    f"""<a class="stdlink" href="{url_for('notes.refcomp_assoc_formation', 
+            scodoc_dept=g.scodoc_dept, formation_id=formation_id)
+            }">{msg_refcomp}</a>"""
+                )
+            elif formation.referentiel_competence is not None:
+                H.append("""(non modifiable car utilisé par des semestres)""")
 
         H.append(
             f"""</li>