diff --git a/api/controllers/common/fields.py b/api/controllers/common/fields.py
index f4b5d11a35..3466eea1f6 100644
--- a/api/controllers/common/fields.py
+++ b/api/controllers/common/fields.py
@@ -1,4 +1,5 @@
 from flask_restful import fields
+
 from libs.helper import AppIconUrlField
 
 parameters__system_parameters = {