diff --git a/addons/project/i18n/project.pot b/addons/project/i18n/project.pot
index 323a2b5ad01..fd7341d2cae 100644
--- a/addons/project/i18n/project.pot
+++ b/addons/project/i18n/project.pot
@@ -3210,6 +3210,14 @@ msgid ""
 " and purpose of the stage."
 msgstr ""
 
+#. module: project
+#: code:addons/project/models/analytic_account.py:0
+#, python-format
+msgid ""
+"You cannot change the company of an analytical account if it is related to a"
+" project."
+msgstr ""
+
 #. module: project
 #: code:addons/project/models/project.py:0
 #, python-format
diff --git a/addons/project/models/analytic_account.py b/addons/project/models/analytic_account.py
index 794f882c318..5ff33265efa 100644
--- a/addons/project/models/analytic_account.py
+++ b/addons/project/models/analytic_account.py
@@ -19,6 +19,12 @@ class AccountAnalyticAccount(models.Model):
         for account in self:
             account.project_count = mapping.get(account.id, 0)
 
+    @api.constrains('company_id')
+    def _check_company_id(self):
+        for record in self:
+            if record.project_ids:
+                raise UserError(_('You cannot change the company of an analytical account if it is related to a project.'))
+
     def unlink(self):
         projects = self.env['project.project'].search([('analytic_account_id', 'in', self.ids)])
         has_tasks = self.env['project.task'].search_count([('project_id', 'in', projects.ids)])