diff --git a/rootdir/etc/init/hw/init.mt6789.rc b/rootdir/etc/init/hw/init.mt6789.rc
index 81c13af..a17594f 100644
--- a/rootdir/etc/init/hw/init.mt6789.rc
+++ b/rootdir/etc/init/hw/init.mt6789.rc
@@ -369,7 +369,7 @@ 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