diff --git a/app/models/moduleimpls.py b/app/models/moduleimpls.py
index 36f5066e..2b9313fa 100644
--- a/app/models/moduleimpls.py
+++ b/app/models/moduleimpls.py
@@ -253,6 +253,27 @@ class ModuleImpl(ScoDocModel):
             return False
         return True
 
+    def can_change_inscriptions(self, user: User | None = None, raise_exc=True) -> bool:
+        """check si user peut inscrire/désinsincrire des étudiants à ce module.
+        Autorise ScoEtudInscrit ou responsables semestre.
+        """
+        user = current_user if user is None else user
+        if not self.formsemestre.etat:
+            if raise_exc:
+                raise ScoLockedSemError("Modification impossible: semestre verrouille")
+            return False
+        # -- check access
+        # resp. module ou ou perm. EtudInscrit ou resp. semestre
+        if (
+            user.id != self.responsable_id
+            and not user.has_permission(Permission.EtudInscrit)
+            and user.id not in (u.id for u in self.formsemestre.responsables)
+        ):
+            if raise_exc:
+                raise AccessDenied(f"Modification impossible pour {user}")
+            return False
+        return True
+
     def est_inscrit(self, etud: Identite) -> bool:
         """
         Vérifie si l'étudiant est bien inscrit au moduleimpl (même si DEM ou DEF au semestre).
diff --git a/app/scodoc/sco_moduleimpl.py b/app/scodoc/sco_moduleimpl.py
index 5cd3a1c0..86c4dfe9 100644
--- a/app/scodoc/sco_moduleimpl.py
+++ b/app/scodoc/sco_moduleimpl.py
@@ -30,9 +30,6 @@
 
 import psycopg2
 
-from app import db
-
-from app.models import Formation
 from app.scodoc import scolog
 from app.scodoc import sco_cache
 import app.scodoc.notesdb as ndb
@@ -56,7 +53,8 @@ _moduleimplEditor = ndb.EditableTable(
 
 def do_moduleimpl_create(args):
     "create a moduleimpl"
-    # TODO remplacer par une methode de ModuleImpl qui appelle super().create_from_dict() puis invalide le formsemestre
+    # TODO remplacer par une methode de ModuleImpl qui appelle
+    # super().create_from_dict() puis invalide le formsemestre
     cnx = ndb.GetDBConnexion()
     r = _moduleimplEditor.create(cnx, args)
     sco_cache.invalidate_formsemestre(
diff --git a/app/scodoc/sco_moduleimpl_inscriptions.py b/app/scodoc/sco_moduleimpl_inscriptions.py
index 8f79e46f..7b5eaa2e 100644
--- a/app/scodoc/sco_moduleimpl_inscriptions.py
+++ b/app/scodoc/sco_moduleimpl_inscriptions.py
@@ -79,9 +79,9 @@ def moduleimpl_inscriptions_edit(
     modimpl = ModuleImpl.get_modimpl(moduleimpl_id)
     module = modimpl.module
     formsemestre = modimpl.formsemestre
-    # -- check lock
-    if not formsemestre.etat:
-        raise ScoValueError("opération impossible: semestre verrouille")
+    # -- check permission (and lock)
+    if not modimpl.can_change_inscriptions():
+        return  # can_change_inscriptions raises exception
     header = html_sco_header.sco_header(
         page_title="Inscription au module",
         init_qtip=True,
diff --git a/app/scodoc/sco_moduleimpl_status.py b/app/scodoc/sco_moduleimpl_status.py
index 0588cc98..1890b87d 100644
--- a/app/scodoc/sco_moduleimpl_status.py
+++ b/app/scodoc/sco_moduleimpl_status.py
@@ -196,9 +196,7 @@ def _ue_coefs_html(modimpl: ModuleImpl) -> str:
 
 def moduleimpl_status(moduleimpl_id=None, partition_id=None):
     """Tableau de bord module (liste des evaluations etc)"""
-    if not isinstance(moduleimpl_id, int):
-        raise ScoInvalidIdType("moduleimpl_id must be an integer !")
-    modimpl: ModuleImpl = ModuleImpl.query.get_or_404(moduleimpl_id)
+    modimpl: ModuleImpl = ModuleImpl.get_modimpl(moduleimpl_id)
     g.current_moduleimpl_id = modimpl.id
     module: Module = modimpl.module
     formsemestre_id = modimpl.formsemestre_id
@@ -312,10 +310,13 @@ def moduleimpl_status(moduleimpl_id=None, partition_id=None):
     H.append(
         f"""<tr><td class="fichetitre2">Inscrits: </td><td> {len(mod_inscrits)} étudiants"""
     )
-    if current_user.has_permission(Permission.EtudInscrit):
+    if modimpl.can_change_inscriptions(raise_exc=False):
         H.append(
             f"""<a class="stdlink" style="margin-left:2em;"
-            href="moduleimpl_inscriptions_edit?moduleimpl_id={modimpl.id}">modifier</a>"""
+            href="{
+                url_for("notes.moduleimpl_inscriptions_edit",
+                    scodoc_dept=g.scodoc_dept, moduleimpl_id=modimpl.id
+                )}">modifier</a>"""
         )
     H.append("</td></tr>")
     # Ligne: règle de calcul
diff --git a/app/views/notes.py b/app/views/notes.py
index 79c2dbdf..8834834f 100644
--- a/app/views/notes.py
+++ b/app/views/notes.py
@@ -1633,7 +1633,7 @@ sco_publish(
 sco_publish(
     "/moduleimpl_inscriptions_edit",
     sco_moduleimpl_inscriptions.moduleimpl_inscriptions_edit,
-    Permission.EtudInscrit,
+    Permission.ScoView,
     methods=["GET", "POST"],
 )
 sco_publish(