diff --git a/src/client/stores/CalculationStore/Data/values.js b/src/client/stores/CalculationStore/Data/values.js
index 8baf005..cc7bb3e 100644
--- a/src/client/stores/CalculationStore/Data/values.js
+++ b/src/client/stores/CalculationStore/Data/values.js
@@ -27,7 +27,7 @@ const valuesActions = {
     if (this.stores.calculationProcess.bypass.status) {
       const { target, value } = this.stores.calculationProcess.bypass.status;
       if (target.indexOf(elementName) > -1) {
-        return value || undefined;
+        return value;
       }
     }
     return this.statuses[elementName];
diff --git a/src/client/stores/CalculationStore/index.ts b/src/client/stores/CalculationStore/index.ts
index 5a5a8c5..5a8ddcf 100644
--- a/src/client/stores/CalculationStore/index.ts
+++ b/src/client/stores/CalculationStore/index.ts
@@ -33,12 +33,12 @@ export const calculationProcess = makeAutoObservable({
   }: {
     param: ElementParam;
     target: (ElementsNames | TableNames)[];
-    value?: ElementStatus;
+    value: ElementStatus;
   }) {
     this.bypass[param] = { target, value };
   },
-  clearBypass(prop) {
-    this.bypass[prop] = undefined;
+  clearBypass(param: ElementParam) {
+    this.bypass[param] = undefined;
   },
 });