diff --git a/addons/project_issue_sheet/models/account_analytic_line.py b/addons/project_issue_sheet/models/account_analytic_line.py
index 5ab61ec7321..5b82b37790a 100644
--- a/addons/project_issue_sheet/models/account_analytic_line.py
+++ b/addons/project_issue_sheet/models/account_analytic_line.py
@@ -6,4 +6,4 @@ from odoo import fields, models
 class AccountAnalyticLine(models.Model):
     _inherit = 'account.analytic.line'
 
-    issue_id = fields.Many2one('project.issue', 'Issue')
+    issue_id = fields.Many2one('project.issue', 'Issue', copy=False)