diff --git a/app/scodoc/sco_moduleimpl_status.py b/app/scodoc/sco_moduleimpl_status.py
index ed1e256d2..3aada3c72 100644
--- a/app/scodoc/sco_moduleimpl_status.py
+++ b/app/scodoc/sco_moduleimpl_status.py
@@ -33,7 +33,7 @@ import datetime
 from flask import g, render_template, url_for
 from flask_login import current_user
 
-from app import db
+from app import db, log
 from app.auth.models import User
 from app.comp import res_sem
 from app.comp.res_common import ResultatsSemestre
@@ -43,6 +43,7 @@ import app.scodoc.sco_utils as scu
 from app.scodoc import sco_assiduites as scass
 from app.scodoc.codes_cursus import UE_SPORT
 from app.scodoc.sco_cursus_dut import formsemestre_has_decisions
+from app.scodoc.sco_exceptions import ScoValueError
 from app.scodoc.sco_permissions import Permission
 
 from app.scodoc import htmlutils
@@ -250,6 +251,22 @@ def moduleimpl_status(moduleimpl_id=None, partition_id=None):
     arrow_up, arrow_down, arrow_none = sco_groups.get_arrow_icons_tags()
     #
     module_resp = db.session.get(User, modimpl.responsable_id)
+    if module_resp is None:
+        # l'utilisateur a été supprimé par erreur
+        # ré-affecte le module au 1er resp. du semestre
+        if modimpl.formsemestre.responsables:
+            log(
+                f"""Modimpl resp. {modimpl} suppressed: affecting to {
+                    modimpl.formsemestre.responsables[0]}"""
+            )
+            modimpl.responsable_id = modimpl.formsemestre.responsables[0].id
+            db.session.add(modimpl)
+            db.session.commit()
+        else:
+            raise ScoValueError(
+                "Module et semestre sans responsables: contacter l'assistance"
+            )
+
     mod_type_name = scu.MODULE_TYPE_NAMES[module.module_type]
     H = [
         f"""<h2 class="formsemestre">{mod_type_name}