diff --git a/line.py b/line.py
index 6d04217..099bde5 100644
--- a/line.py
+++ b/line.py
@@ -5,7 +5,7 @@
 
 from trytond.model import ModelView, ModelSQL, Workflow, fields, Check
 from trytond.pool import Pool
-from trytond.pyson import Eval, If, Or, Bool
+from trytond.pyson import Eval, If, Or, Bool, Date
 from trytond.transaction import Transaction
 from trytond.report import Report
 from trytond.exceptions import UserError
@@ -220,7 +220,9 @@ class Line(SecondCurrencyMixin, Workflow, ModelSQL, ModelView):
     def view_attributes(cls):
         return super().view_attributes() + [
             ('/tree', 'visual',
-                If(Eval('balance', 0) < 0, 'warning', '')),
+                If(Eval('balance', 0) < 0, 'warning',
+                    If(Eval('date', Date()) > Date(), 'muted', '')
+                    )),
             ]
 
     @classmethod