diff --git a/vehicle/2.0/vts/types.vts b/vehicle/2.0/vts/types.vts
index fc63add32d..e044501904 100644
--- a/vehicle/2.0/vts/types.vts
+++ b/vehicle/2.0/vts/types.vts
@@ -1149,6 +1149,10 @@ attribute: {
     enum_value: {
         scalar_type: "int32_t"
 
+        enumerator: "NONE"
+        scalar_value: {
+            int32_t: 0
+        }
         enumerator: "READ"
         scalar_value: {
             int32_t: 1