diff --git a/src/client/stores/CalculationStore/Effects/reactions/tablesReactions.ts b/src/client/stores/CalculationStore/Effects/reactions/tablesReactions.ts
index 34101f4..8cec4ee 100644
--- a/src/client/stores/CalculationStore/Effects/reactions/tablesReactions.ts
+++ b/src/client/stores/CalculationStore/Effects/reactions/tablesReactions.ts
@@ -786,10 +786,11 @@ export default [
       const { leaseObjectCategory } = calculationStore.values;
       return leaseObjectCategory;
     },
-    effect: leaseObjectCategory => {
-      const isTrailer = leaseObjectCategory === 100000004;
+    effect: (nextLeaseObjectCategory, prevLeaseObjectCategory) => {
+      const nextIsTrailer = nextLeaseObjectCategory === 100000004;
+      const prevIsTrailer = prevLeaseObjectCategory === 100000004;
 
-      if (isTrailer) {
+      if (nextIsTrailer) {
         const otherInsuranceCompany = calculationStore.tables.tableInsurance.options?.insuranceCompany?.find(
           x => x.name?.includes('ПРОЧИЕ'),
         );
@@ -825,7 +826,7 @@ export default [
         )({
           insuranceCompany: {
             filter: insuranceOsagoDefaultFilter,
-            value: null,
+            value: prevIsTrailer ? null : undefined,
             status: ElementStatus.Default,
           },
           insCost: {