diff --git a/kallithea/lib/dbmigrate/versions/024_version_2_1_0.py b/kallithea/lib/dbmigrate/versions/024_version_2_1_0.py
--- a/kallithea/lib/dbmigrate/versions/024_version_2_1_0.py
+++ b/kallithea/lib/dbmigrate/versions/024_version_2_1_0.py
@@ -8,6 +8,8 @@ from kallithea.lib.dbmigrate.migrate.cha
 from kallithea.model import meta
 from kallithea.lib.dbmigrate.versions import _reset_base, notify
 
+from kallithea.lib.utils2 import str2bool
+
 log = logging.getLogger(__name__)