diff --git a/src/client/process/used-pl/reactions.ts b/src/client/process/used-pl/reactions.ts
index 462b881..834cc53 100644
--- a/src/client/process/used-pl/reactions.ts
+++ b/src/client/process/used-pl/reactions.ts
@@ -354,13 +354,15 @@ export default function ($calculation: ICalculationStore) {
       };
     },
     ({ vin }) => {
-      if ($calculation.getValue('leaseObjectCategory')) {
-        $calculation.setValidation(
-          'tbxVIN',
-          vin.length === 17 && vinRegex.test(vin),
-        );
-      } else {
-        $calculation.setValidation('tbxVIN', vinRegex.test(vin));
+      if (vin) {
+        if ($calculation.getValue('leaseObjectCategory')) {
+          $calculation.setValidation(
+            'tbxVIN',
+            vin.length === 17 && vinRegex.test(vin),
+          );
+        } else {
+          $calculation.setValidation('tbxVIN', vinRegex.test(vin));
+        }
       }
     },
   );