diff --git a/sf_base/models/base.py b/sf_base/models/base.py
index c679ac74..3d5dcda5 100644
--- a/sf_base/models/base.py
+++ b/sf_base/models/base.py
@@ -21,7 +21,7 @@ class MachineControlSystem(models.Model):
     _description = '控制系统'
 
     code = fields.Char('编码', size=10)
-    name = fields.Char('名称', size=10)
+    name = fields.Char('名称')
     brand_id = fields.Many2one('sf.machine.brand', '品牌')
     active = fields.Boolean('有效', default=True)