diff --git a/app/models/etudiants.py b/app/models/etudiants.py
index f79264c5..61fd3e23 100644
--- a/app/models/etudiants.py
+++ b/app/models/etudiants.py
@@ -297,7 +297,7 @@ class Identite(models.ScoDocModel):
         else:
             return self.nom
 
-    @cached_property
+    @property
     def nomprenom(self, reverse=False) -> str:
         """Civilité/nom/prenom pour affichages: "M. Pierre Dupont"
         Si reverse, "Dupont Pierre", sans civilité.
diff --git a/app/models/formsemestre.py b/app/models/formsemestre.py
index 1799c603..c3623bb3 100644
--- a/app/models/formsemestre.py
+++ b/app/models/formsemestre.py
@@ -945,7 +945,7 @@ class FormSemestre(models.ScoDocModel):
             ins.etudid for ins in self.inscriptions if ins.etat == scu.INSCRIT
         }
 
-    @cached_property
+    @property
     def etuds_inscriptions(self) -> dict:
         """Map { etudid : inscription } (incluant DEM et DEF)"""
         return {ins.etud.id: ins for ins in self.inscriptions}
diff --git a/app/scodoc/sco_cache.py b/app/scodoc/sco_cache.py
index ddb8eb3c..677dae6c 100644
--- a/app/scodoc/sco_cache.py
+++ b/app/scodoc/sco_cache.py
@@ -55,7 +55,6 @@ from flask import g
 
 import app
 from app import db, log
-from app.scodoc import notesdb as ndb
 from app.scodoc import sco_utils as scu
 from app.scodoc.sco_exceptions import ScoException
 
@@ -174,17 +173,15 @@ class EvaluationCache(ScoDocCache):
     @classmethod
     def invalidate_all_sems(cls):
         "delete all evaluations in current dept from cache"
+        from app.models.evaluations import Evaluation
+        from app.models.formsemestre import FormSemestre
+        from app.models.moduleimpls import ModuleImpl
+
         evaluation_ids = [
-            x[0]
-            for x in ndb.SimpleQuery(
-                """SELECT e.id
-                FROM notes_evaluation e, notes_moduleimpl mi, notes_formsemestre s
-                WHERE s.dept_id=%(dept_id)s
-                AND s.id = mi.formsemestre_id
-                AND mi.id = e.moduleimpl_id;
-                """,
-                {"dept_id": g.scodoc_dept_id},
-            )
+            e.id
+            for e in Evaluation.query.join(ModuleImpl)
+            .join(FormSemestre)
+            .filter_by(dept_id=g.scodoc_dept_id)
         ]
         cls.delete_many(evaluation_ids)