diff --git a/customer_outstanding_statement/report/customer_outstanding_statement.py b/customer_outstanding_statement/report/customer_outstanding_statement.py
index cc6452ef..1caae334 100644
--- a/customer_outstanding_statement/report/customer_outstanding_statement.py
+++ b/customer_outstanding_statement/report/customer_outstanding_statement.py
@@ -52,12 +52,12 @@ class CustomerOutstandingStatement(models.AbstractModel):
             SELECT m.name as move_id, l.partner_id, l.date, l.name,
                             l.ref, l.blocked, l.currency_id, l.company_id,
             CASE WHEN (l.currency_id is not null AND l.amount_currency > 0.0)
-                THEN sum(l.amount_currency)
-                ELSE sum(l.debit)
+                THEN avg(l.amount_currency)
+                ELSE avg(l.debit)
             END as debit,
             CASE WHEN (l.currency_id is not null AND l.amount_currency < 0.0)
-                THEN sum(l.amount_currency * (-1))
-                ELSE sum(l.credit)
+                THEN avg(l.amount_currency * (-1))
+                ELSE avg(l.credit)
             END as credit,
             CASE WHEN l.balance > 0.0
                 THEN l.balance - sum(coalesce(pd.amount, 0.0))