diff --git a/cor_custom/models/analytic.py b/cor_custom/models/analytic.py
index 0c5da41..cb15854 100755
--- a/cor_custom/models/analytic.py
+++ b/cor_custom/models/analytic.py
@@ -8,8 +8,8 @@ from odoo.osv import expression
 class AccountAnalyticLine(models.Model):
     _inherit = 'account.analytic.line'
 
-    start_time = fields.Float('Start Time', digits=(16, 2))
-    end_time = fields.Float('End Time', digits=(16, 2))
+    start_time = fields.Float(string='Start Time', digits=(16, 2))
+    end_time = fields.Float(string='End Time', digits=(16, 2))
 
 
     _sql_constraints = [