diff --git a/src/client/hooks/useValidation.ts b/src/client/hooks/useValidation.ts
index 4291bc4..7a99e24 100644
--- a/src/client/hooks/useValidation.ts
+++ b/src/client/hooks/useValidation.ts
@@ -33,8 +33,10 @@ export const useValidation = ({
     if (!value) {
       calculationStore.setValidation(elementName, undefined);
     } else {
-      let validationResult = validator ? validator(value) : true;
-      calculationStore.setValidation(elementName, validationResult);
+      if (validator) {
+        let validationResult = validator(value);
+        calculationStore.setValidation(elementName, validationResult);
+      }
     }
   }, [value, validator, elementName]);