diff --git a/backend/src/modules/health-scores/health-scores.service.ts b/backend/src/modules/health-scores/health-scores.service.ts
index 6ecbec9..efb84e9 100644
--- a/backend/src/modules/health-scores/health-scores.service.ts
+++ b/backend/src/modules/health-scores/health-scores.service.ts
@@ -281,7 +281,7 @@ export class HealthScoresService {
       `, [`${year}-01-01`]),
       // Delinquent receivables (invoices past due)
       qr.query(`
-        SELECT COUNT(*) as count, COALESCE(SUM(amount_due - amount_paid), 0) as total_overdue
+        SELECT COUNT(*) as count, COALESCE(SUM(amount - amount_paid), 0) as total_overdue
         FROM invoices
         WHERE status IN ('sent', 'overdue') AND due_date < CURRENT_DATE
       `),