diff --git a/ui/src/pages/ProductionProductCostingHasCostDetail.vue b/ui/src/pages/ProductionProductCostingHasCostDetail.vue
index 9f4bb17..fa26ecc 100644
--- a/ui/src/pages/ProductionProductCostingHasCostDetail.vue
+++ b/ui/src/pages/ProductionProductCostingHasCostDetail.vue
@@ -2884,7 +2884,11 @@ function shouldIncludeRowInGroupTotal (grp, row) {
   // CM1/CM2 sub-headers always show their full group value. For every other
   // group, the explicit "Maliyete Dahil" selection controls the subtotal.
   if (isCMGroupName(grp?.sAciklama3 || row?.sAciklama3)) return true
-  return normalizeBooleanFlag(row?.maliyeteDahil ?? row?.maliyete_dahil ?? row?.Maliyete_dahil)
+
+  const inclusionValue = row?.maliyeteDahil ?? row?.maliyete_dahil ?? row?.Maliyete_dahil
+  if (inclusionValue === false || inclusionValue === 0) return false
+  const normalizedValue = String(inclusionValue ?? '').trim().toLowerCase()
+  return normalizedValue !== '0' && normalizedValue !== 'false' && normalizedValue !== 'hayir'
 }
 
 function resolveGroupTRYTutar (grp, _revision) {