diff --git a/account_invoice_inter_company/models/account_move.py b/account_invoice_inter_company/models/account_move.py
index 1e74984da6b..9333fecc901 100644
--- a/account_invoice_inter_company/models/account_move.py
+++ b/account_invoice_inter_company/models/account_move.py
@@ -328,6 +328,8 @@ def write(self, vals):
         if self.env.context.get("skip_check_amount_difference"):
             return res
         for move in self.filtered("auto_invoice_id"):
+            if not move.company_id.intercompany_invoice_lock:
+                continue
             if (
                 float_compare(
                     move.amount_total,
diff --git a/account_invoice_inter_company/models/res_company.py b/account_invoice_inter_company/models/res_company.py
index bac93207b77..4ed3c9a6bd3 100644
--- a/account_invoice_inter_company/models/res_company.py
+++ b/account_invoice_inter_company/models/res_company.py
@@ -17,6 +17,10 @@ class ResCompany(models.Model):
         "for this company, it will automatically validate it",
         default=True,
     )
+    intercompany_invoice_lock = fields.Boolean(
+        help="Don't allow changing an autogenerated invoice.",
+        default=True,
+    )
     intercompany_invoice_user_id = fields.Many2one(
         "res.users",
         string="Inter Company Invoice User",
diff --git a/account_invoice_inter_company/models/res_config_settings.py b/account_invoice_inter_company/models/res_config_settings.py
index 240d614d512..6704b3d3ed5 100644
--- a/account_invoice_inter_company/models/res_config_settings.py
+++ b/account_invoice_inter_company/models/res_config_settings.py
@@ -14,6 +14,12 @@ class ResConfigSettings(models.TransientModel):
         help="When an invoice is created by a multi company rule for "
         "this company, it will automatically validate it.",
     )
+    intercompany_invoice_lock = fields.Boolean(
+        related="company_id.intercompany_invoice_lock",
+        string="Lock auto-generated invoices",
+        readonly=False,
+        help="Don't allow changing an autogenerated invoice.",
+    )
     intercompany_invoice_user_id = fields.Many2one(
         related="company_id.intercompany_invoice_user_id",
         readonly=False,
diff --git a/account_invoice_inter_company/tests/test_inter_company_invoice.py b/account_invoice_inter_company/tests/test_inter_company_invoice.py
index 49e5101c123..455483a8650 100644
--- a/account_invoice_inter_company/tests/test_inter_company_invoice.py
+++ b/account_invoice_inter_company/tests/test_inter_company_invoice.py
@@ -504,6 +504,12 @@ def test03_confirm_invoice_and_cancel(self):
             with move_form.invoice_line_ids.edit(0) as line_form:
                 line_form.price_unit = 33.3
             move_form.save()
+        # Check that we can modify it after we disable the setting
+        dest_invoice.company_id.intercompany_invoice_lock = False
+        move_form = Form(dest_invoice)
+        with move_form.invoice_line_ids.edit(0) as line_form:
+            line_form.price_unit = 33.3
+        move_form.save()
 
     def test_confirm_invoice_with_child_partner(self):
         # ensure the catalog is shared
diff --git a/account_invoice_inter_company/views/res_config_settings_view.xml b/account_invoice_inter_company/views/res_config_settings_view.xml
index 94ddeb3cf21..417c9a9ab9f 100644
--- a/account_invoice_inter_company/views/res_config_settings_view.xml
+++ b/account_invoice_inter_company/views/res_config_settings_view.xml
@@ -66,6 +66,14 @@
                                 for="invoice_auto_validation"
                             />
                         </div>
+                        <div id="inter_company_invoice_lock">
+                            <field name="intercompany_invoice_lock" class="oe_inline" />
+                            <label
+                                string="Lock invoice amounts"
+                                class="o_light_label"
+                                for="intercompany_invoice_lock"
+                            />
+                        </div>
                     </div>
                 </div>
             </xpath>