diff --git a/addons/hr_timesheet_sheet/models/account_analytic_line.py b/addons/hr_timesheet_sheet/models/account_analytic_line.py
index a46a68507b3f6..15b67b24fa47a 100644
--- a/addons/hr_timesheet_sheet/models/account_analytic_line.py
+++ b/addons/hr_timesheet_sheet/models/account_analytic_line.py
@@ -21,11 +21,11 @@ def _compute_sheet(self):
             sheets = self.env['hr_timesheet_sheet.sheet'].search(
                 [('date_to', '>=', ts_line.date), ('date_from', '<=', ts_line.date),
                  ('employee_id.user_id.id', '=', ts_line.user_id.id),
-                 ('state', 'in', ['draft', 'new'])])
+                 ('state', 'in', ['draft', 'new'])], limit=1)
             if sheets:
                 # [0] because only one sheet possible for an employee between 2 dates
-                ts_line.sheet_id_computed = sheets[0]
-                ts_line.sheet_id = sheets[0]
+                ts_line.sheet_id_computed = sheets
+                ts_line.sheet_id = sheets
 
     def _search_sheet(self, operator, value):
         assert operator == 'in'