diff --git a/src/client/Components/Calculation/ELT/Content/Kasko/lib/composeRequest.ts b/src/client/Components/Calculation/ELT/Content/Kasko/lib/composeRequest.ts
index 530af7c..03c0014 100644
--- a/src/client/Components/Calculation/ELT/Content/Kasko/lib/composeRequest.ts
+++ b/src/client/Components/Calculation/ELT/Content/Kasko/lib/composeRequest.ts
@@ -59,7 +59,10 @@ export default function (this: ICalculationStore) {
     engineType = mapEngineType[engineTypeValue];
   }
 
-  const duration = this.getValue('leasingPeriod');
+  let duration = this.getValue('leasingPeriod');
+  if (duration < 12) {
+    duration = 12;
+  }
   const cost =
     this.getValue('leaseObjectPrice') - this.getValue('supplierDiscountRub');