diff --git a/app/views/pn_modules.py b/app/views/pn_modules.py
index 33ee1d82..70e85e8d 100644
--- a/app/views/pn_modules.py
+++ b/app/views/pn_modules.py
@@ -215,6 +215,11 @@ def edit_modules_ue_coefs():
         {lockicon}
         </h2>
         """,
+        """<span class="warning">Formation verrouilée car un ou plusieurs 
+        semestres verrouillés l'utilisent.
+        </span>"""
+        if locked
+        else "",
         render_template(
             "pn/form_modules_ue_coefs.j2",
             formation=formation,