diff --git a/app/scodoc/sco_archives.py b/app/scodoc/sco_archives.py
index 9c05c6535..6fe8f7669 100644
--- a/app/scodoc/sco_archives.py
+++ b/app/scodoc/sco_archives.py
@@ -270,6 +270,10 @@ class BaseArchiver:
             fname = os.path.join(archive_id, filename)
             with open(fname, "wb") as f:
                 f.write(data)
+        except FileNotFoundError as exc:
+            raise ScoValueError(
+                f"Erreur stockage archive (dossier inexistant, chemin {fname})"
+            ) from exc
         finally:
             scu.GSL.release()
         return filename
@@ -282,8 +286,13 @@ class BaseArchiver:
             raise ScoValueError("archive introuvable (déjà supprimée ?)")
         fname = os.path.join(archive_id, filename)
         log(f"reading archive file {fname}")
-        with open(fname, "rb") as f:
-            data = f.read()
+        try:
+            with open(fname, "rb") as f:
+                data = f.read()
+        except FileNotFoundError as exc:
+            raise ScoValueError(
+                f"Erreur lecture archive (inexistant, chemin {fname})"
+            ) from exc
         return data
 
     def get_archived_file(self, oid, archive_name, filename, dept_id: int = None):