diff --git a/keystore/blob.cpp b/keystore/blob.cpp
index eac8f11..497f304 100644
--- a/keystore/blob.cpp
+++ b/keystore/blob.cpp
@@ -228,7 +228,7 @@
     mBlob->version = CURRENT_BLOB_VERSION;
     mBlob->type = uint8_t(type);
 
-    if (type == TYPE_MASTER_KEY) {
+    if (type == TYPE_MASTER_KEY || type == TYPE_MASTER_KEY_AES256) {
         mBlob->flags = KEYSTORE_FLAG_ENCRYPTED;
     } else {
         mBlob->flags = KEYSTORE_FLAG_NONE;