diff --git a/app/core/src/main/java/com/topjohnwu/magisk/core/tasks/MagiskInstaller.kt b/app/core/src/main/java/com/topjohnwu/magisk/core/tasks/MagiskInstaller.kt
index b674cbf78..ae6118c1b 100644
--- a/app/core/src/main/java/com/topjohnwu/magisk/core/tasks/MagiskInstaller.kt
+++ b/app/core/src/main/java/com/topjohnwu/magisk/core/tasks/MagiskInstaller.kt
@@ -202,7 +202,7 @@ abstract class MagiskInstallImpl protected constructor(
 
         // adapted /scripts/flash_script.sh addon.d
         return arrayOf(
-            "mount -o rw,remount $systemPartition",
+            "su -c mount -o rw,remount $systemPartition",
             "rm -rf $addond/99-magisk.sh 2>/dev/null",
             "rm -rf $addond/magisk 2>/dev/null",
             "mkdir -p $addond/magisk",