diff --git a/addons/project_purchase/models/project_project.py b/addons/project_purchase/models/project_project.py
index 2a880f7d3f5..0eb3004b80c 100644
--- a/addons/project_purchase/models/project_project.py
+++ b/addons/project_purchase/models/project_project.py
@@ -22,10 +22,10 @@ class Project(models.Model):
         query.add_where('purchase_order_line.analytic_distribution ?| %s', [[str(account_id) for account_id in self.analytic_account_id.ids]])
 
         query_string, query_param = query.select(
-            'jsonb_object_keys(analytic_distribution) as account_id',
+            'jsonb_object_keys(purchase_order_line.analytic_distribution) as account_id',
             'COUNT(DISTINCT(order_id)) as purchase_order_count',
         )
-        query_string = f"{query_string} GROUP BY jsonb_object_keys(analytic_distribution)"
+        query_string = f"{query_string} GROUP BY jsonb_object_keys(purchase_order_line.analytic_distribution)"
 
         self._cr.execute(query_string, query_param)
         data = {int(record.get('account_id')): record.get('purchase_order_count') for record in self._cr.dictfetchall()}