diff --git a/app/scodoc/sco_utils.py b/app/scodoc/sco_utils.py
index deb258bff..ac7b7c48c 100644
--- a/app/scodoc/sco_utils.py
+++ b/app/scodoc/sco_utils.py
@@ -571,8 +571,7 @@ def check_scodoc7_password(scodoc7_hash, password):
     used only during old databases migrations"""
     m = md5()
     m.update(password.encode("utf-8"))
-    # encodestring à remplacer par encodebytes #py3
-    h = base64.encodestring(m.digest()).decode("utf-8").strip()
+    h = base64.encodebytes(m.digest()).decode("utf-8").strip()
     return h == scodoc7_hash