diff --git a/binder/android/os/IVold.aidl b/binder/android/os/IVold.aidl
index cec38c5..1002c9a 100644
--- a/binder/android/os/IVold.aidl
+++ b/binder/android/os/IVold.aidl
@@ -167,6 +167,7 @@ interface IVold {
     const int REMOUNT_MODE_INSTALLER = 5;
     const int REMOUNT_MODE_FULL = 6;
     const int REMOUNT_MODE_PASS_THROUGH = 7;
+    const int REMOUNT_MODE_ANDROID_WRITABLE = 8;
 
     const int VOLUME_STATE_UNMOUNTED = 0;
     const int VOLUME_STATE_CHECKING = 1;