diff --git a/rootdir/etc/init/hw/init.mt6789.rc b/rootdir/etc/init/hw/init.mt6789.rc
index b40cf44..2d8d7b0 100644
--- a/rootdir/etc/init/hw/init.mt6789.rc
+++ b/rootdir/etc/init/hw/init.mt6789.rc
@@ -352,7 +352,7 @@ on post-fs-data
     chown system system /dev/mtk_mdp
 
     # MDP SYNC
-    chmod 0640 /dev/mdp_sync
+    chmod 0644 /dev/mdp_sync
     chown system system /dev/mdp_sync
 
     # MML PQ