diff --git a/app/auth/routes.py b/app/auth/routes.py
index 6263ef35..b1a0c41d 100644
--- a/app/auth/routes.py
+++ b/app/auth/routes.py
@@ -6,6 +6,7 @@ auth.routes.py
 from flask import current_app, flash, render_template
 from flask import redirect, url_for, request
 from flask_login import login_user, logout_user, current_user
+from sqlalchemy import func
 
 from app import db
 from app.auth import bp
@@ -79,18 +80,18 @@ def reset_password_request():
         return redirect(url_for("scodoc.index"))
     form = ResetPasswordRequestForm()
     if form.validate_on_submit():
-        users = User.query.filter_by(email=form.email.data).all()
+        users = User.query.filter(
+            func.lower(User.email) == func.lower(form.email.data)
+        ).all()
         if len(users) == 1:
             send_password_reset_email(users[0])
         elif len(users) > 1:
             current_app.logger.info(
-                "reset_password_request: multiple users with email '{}' (ignoring)".format(
-                    form.email.data
-                )
+                f"reset_password_request: multiple users with email '{form.email.data}' (ignoring)"
             )
         else:
             current_app.logger.info(
-                "reset_password_request: for unkown user '{}'".format(form.email.data)
+                f"reset_password_request: for unkown user '{form.email.data}'"
             )
         flash(
             _("Voir les instructions envoyées par mail (pensez à regarder vos spams)")
diff --git a/app/scodoc/sco_archives.py b/app/scodoc/sco_archives.py
index 4fd49b41..ac795578 100644
--- a/app/scodoc/sco_archives.py
+++ b/app/scodoc/sco_archives.py
@@ -197,7 +197,7 @@ class BaseArchiver(object):
         """returns archive id (check that name is valid)"""
         self.initialize()
         if not self.is_valid_archive_name(archive_name):
-            raise ValueError("invalid archive name")
+            raise ScoValueError(f"Archive {archive_name} introuvable")
         archive_id = os.path.join(self.get_obj_dir(oid), archive_name)
         if not os.path.isdir(archive_id):
             log(