diff --git a/src/Finance/CardVerificationValue/CVVHelper.php b/src/Finance/CardVerificationValue/CVVHelper.php
index 90bd321..e377908 100644
--- a/src/Finance/CardVerificationValue/CVVHelper.php
+++ b/src/Finance/CardVerificationValue/CVVHelper.php
@@ -41,6 +41,8 @@ public static function getCvv($code)
           $code,
           'Transaction failed because wrong CVV2 number was entered or no CVV2 number was entered'
         );
+      default:
+        return new CVVResponse($code, "Unsupported CVV2 Response");
     }
   }
 }