diff --git a/app/scodoc/sco_preferences.py b/app/scodoc/sco_preferences.py
index 6340d6e8..9544bbe9 100644
--- a/app/scodoc/sco_preferences.py
+++ b/app/scodoc/sco_preferences.py
@@ -111,7 +111,7 @@ get_base_preferences(formsemestre_id)
 
 """
 import flask
-from flask import flash, g, request
+from flask import flash, g, request, url_for
 
 # from flask_login import current_user
 
diff --git a/migrations/versions/dbcf2175e87f_modèles_assiduites_justificatifs.py b/migrations/versions/dbcf2175e87f_modèles_assiduites_justificatifs.py
index b74fa27d..08696bdb 100755
--- a/migrations/versions/dbcf2175e87f_modèles_assiduites_justificatifs.py
+++ b/migrations/versions/dbcf2175e87f_modèles_assiduites_justificatifs.py
@@ -11,7 +11,7 @@ import sqlalchemy as sa
 
 # revision identifiers, used by Alembic.
 revision = "dbcf2175e87f"
-down_revision = "6520faf67508"
+down_revision = "054dd6133b9c"
 branch_labels = None
 depends_on = None