diff --git a/plugins/VersionUpgrade/VersionUpgrade462to47/VersionUpgrade462to47.py b/plugins/VersionUpgrade/VersionUpgrade462to47/VersionUpgrade462to47.py
index 396b17b4be..54573359cf 100644
--- a/plugins/VersionUpgrade/VersionUpgrade462to47/VersionUpgrade462to47.py
+++ b/plugins/VersionUpgrade/VersionUpgrade462to47/VersionUpgrade462to47.py
@@ -4,6 +4,8 @@
 import configparser
 from typing import Tuple, List, Dict, Set
 import io
+
+from UM.Util import parseBool
 from UM.VersionUpgrade import VersionUpgrade