diff --git a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/einvoice/KSeFInvoiceLineBuilder.java b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/einvoice/KSeFInvoiceLineBuilder.java
index af42f52..e6eae90 100644
--- a/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/einvoice/KSeFInvoiceLineBuilder.java
+++ b/office-alexander-logistics-app/src/main/java/com/alexanderlogistics/einvoice/KSeFInvoiceLineBuilder.java
@@ -156,7 +156,12 @@ public class KSeFInvoiceLineBuilder {
             BigDecimal grossAmount = netAmount.add(vatAmount);
 
             // Write the FaWiersz block
-            writeFaWiersz(model, elementFa, invoiceItem, pos, taxCode, netAmount, vatAmount, grossAmount);
+            // writeFaWiersz(model, elementFa, invoiceItem, pos, taxCode, netAmount,
+            // vatAmount, grossAmount);
+            // Changes 06.Juli 2026
+            // As agreed with Justyna and Maciej we send only absolute values here!!!!!!
+            writeFaWiersz(model, elementFa, invoiceItem, pos, taxCode, netAmount.abs(), vatAmount.abs(),
+                    grossAmount.abs());
 
             // Aggregate per TaxCode
             aggregates.merge(taxCode,