diff --git a/app/models/etudiants.py b/app/models/etudiants.py
index a81ac73d5..30e42d25b 100644
--- a/app/models/etudiants.py
+++ b/app/models/etudiants.py
@@ -199,6 +199,11 @@ class Identite(models.ScoDocModel):
     @classmethod
     def get_etud(cls, etudid: int) -> "Identite":
         """Etudiant ou 404, cherche uniquement dans le département courant"""
+        if not isinstance(etudid, int):
+            try:
+                etudid = int(etudid)
+            except (TypeError, ValueError):
+                abort(404, "etudid invalide")
         if g.scodoc_dept:
             return cls.query.filter_by(
                 id=etudid, dept_id=g.scodoc_dept_id