diff --git a/apps/web/process/price/reactions/common.ts b/apps/web/process/price/reactions/common.ts
index dc9eecc..293eac9 100644
--- a/apps/web/process/price/reactions/common.ts
+++ b/apps/web/process/price/reactions/common.ts
@@ -123,7 +123,7 @@ export default function reactions({ store, apolloClient }: ProcessContext) {
     (firstPaymentRub) => {
       const { plPriceRub, addEquipmentPrice, importProgramSum } = $calculation.$values.getValues();
       const perc = (firstPaymentRub / (plPriceRub + addEquipmentPrice - importProgramSum)) * 100;
-      $calculation.element('tbxFirstPaymentPerc').setValue(perc);
+      $calculation.element('tbxFirstPaymentPerc').setValue(perc || 0);
     }
   );
 
@@ -147,7 +147,7 @@ export default function reactions({ store, apolloClient }: ProcessContext) {
     (comissionRub) => {
       const { plPriceRub, addEquipmentPrice, importProgramSum } = $calculation.$values.getValues();
       const perc = (comissionRub / (plPriceRub + addEquipmentPrice - importProgramSum)) * 100;
-      $calculation.element('tbxComissionPerc').setValue(perc);
+      $calculation.element('tbxComissionPerc').setValue(perc || 0);
     }
   );
 
@@ -187,7 +187,7 @@ export default function reactions({ store, apolloClient }: ProcessContext) {
       }
 
       const perc = (lastPaymentRub / (plPriceRub + addEquipmentPrice - importProgramSum)) * 100;
-      $calculation.element('tbxLastPaymentPerc').setValue(perc);
+      $calculation.element('tbxLastPaymentPerc').setValue(perc || 0);
     }
   );
 }