diff --git a/addons/project_purchase/models/project_project.py b/addons/project_purchase/models/project_project.py
index 11a2b8ce2f4..640da6112fb 100644
--- a/addons/project_purchase/models/project_project.py
+++ b/addons/project_purchase/models/project_project.py
@@ -169,7 +169,11 @@ class Project(models.Model):
                     purchase_order_line_invoice_line_ids.extend(pol_read['invoice_lines'].ids)
                     currency = self.env['res.currency'].browse(pol_read['currency_id']).with_prefetch(currency_ids)
                     price_unit = currency._convert(pol_read['price_unit'], self.currency_id, self.company_id)
-                    analytic_contribution = pol_read['analytic_distribution'][str(self.analytic_account_id.id)] / 100.
+                    # an analytic account can appear several time in an analytic distribution with different repartition percentage
+                    analytic_contribution = sum(
+                        percentage for ids, percentage in pol_read['analytic_distribution'].items()
+                        if str(self.analytic_account_id.id) in ids.split(',')
+                    ) / 100.
                     amount_invoiced -= price_unit * pol_read['qty_invoiced'] * analytic_contribution if pol_read['qty_invoiced'] > 0 else 0.0
                     if pol_read['qty_to_invoice'] > 0:
                         amount_to_invoice -= price_unit * pol_read['qty_to_invoice'] * analytic_contribution
diff --git a/addons/project_purchase/tests/test_project_profitability.py b/addons/project_purchase/tests/test_project_profitability.py
index 0e6a65d6a7b..8f92b27c79a 100644
--- a/addons/project_purchase/tests/test_project_profitability.py
+++ b/addons/project_purchase/tests/test_project_profitability.py
@@ -507,3 +507,36 @@ class TestProjectPurchaseProfitability(TestProjectProfitabilityCommon, TestPurch
         purchase_bill = purchase_order.invoice_ids  # get the bill from the purchase
         purchase_bill.invoice_date = datetime.today()
         purchase_bill.action_post()
+
+    def test_cross_analytics_contribution(self):
+        cross_plan = self.env['account.analytic.plan'].create({'name': 'Cross Plan'})
+        cross_account = self.env['account.analytic.account'].create({
+            'name': "Cross Analytic Account",
+            'plan_id': cross_plan.id,
+            "company_id": self.env.company.id,
+        })
+        cross_distribution = 42
+
+        cross_order = self.env['purchase.order'].create({
+            'name': 'Cross Purchase Order',
+            "partner_id": self.partner_a.id,
+            "company_id": self.env.company.id,
+            'order_line': [
+                Command.create({
+                    'analytic_distribution': {
+                        f"{self.project.analytic_account_id.id},{cross_account.id}": cross_distribution,
+                    },
+                    "product_id": self.product_order.id,
+                    "product_qty": 1,
+                    "price_unit": self.product_order.standard_price,
+                    "currency_id": self.env.company.currency_id.id,
+                }),
+            ],
+        })
+
+        cross_order.button_confirm()
+        items = self.project._get_profitability_items()
+        self.assertEqual(
+            items['costs']['data'][0]['to_bill'],
+            self.product_order.standard_price *-cross_distribution/100
+        )