diff --git a/plugins/dbms/firebird/fingerprint.py b/plugins/dbms/firebird/fingerprint.py
index 4d5daf3d6..0dc8d18ca 100644
--- a/plugins/dbms/firebird/fingerprint.py
+++ b/plugins/dbms/firebird/fingerprint.py
@@ -22,6 +22,7 @@ from lib.core.data import logger
 from lib.core.enums import DBMS
 from lib.core.session import setDbms
 from lib.core.settings import FIREBIRD_ALIASES
+from lib.core.settings import METADB_SUFFIX
 from lib.request import inject
 from lib.request.connect import Connect as Request