diff --git a/tools/pfxadmin_migrate/migrate.py b/tools/pfxadmin_migrate/migrate.py
index ee3b663bf..5e498ad63 100755
--- a/tools/pfxadmin_migrate/migrate.py
+++ b/tools/pfxadmin_migrate/migrate.py
@@ -41,7 +41,7 @@ admin. panel. Currently, it appears that the ``crypt`` scheme is
 compatible with PostfixAdmin ``md5crypt`` algorithm...
 
 """
-import os
+import os, sys
 from django.conf import settings
 from django.db.utils import ConnectionDoesNotExist
 from django.db.models import Q