diff --git a/addons/point_of_sale/models/pos_order.py b/addons/point_of_sale/models/pos_order.py
index 2f63db01d9a..3fafb06b35e 100644
--- a/addons/point_of_sale/models/pos_order.py
+++ b/addons/point_of_sale/models/pos_order.py
@@ -569,7 +569,7 @@ class PosOrder(models.Model):
                 maxDiff = currency.round(self.config_id.rounding_method.rounding)
 
             diff = currency.round(self.amount_total - self.amount_paid)
-            if not abs(diff) < maxDiff:
+            if not abs(diff) <= maxDiff:
                 raise UserError(_("Order %s is not fully paid.", self.name))
 
         self.write({'state': 'paid'})