diff --git a/core/src/main/java/com/topjohnwu/core/tasks/MagiskInstaller.java b/core/src/main/java/com/topjohnwu/core/tasks/MagiskInstaller.java
index 60a7a7d21..6cf777c16 100644
--- a/core/src/main/java/com/topjohnwu/core/tasks/MagiskInstaller.java
+++ b/core/src/main/java/com/topjohnwu/core/tasks/MagiskInstaller.java
@@ -285,7 +285,7 @@ public abstract class MagiskInstaller {
     }
 
     protected boolean postOTA() {
-        SuFile bootctl = new SuFile(Const.MAGISK_PATH + "/.core/bootctl");
+        SuFile bootctl = new SuFile("/data/adb/bootctl");
         try (InputStream in = App.self.getResources().openRawResource(R.raw.bootctl);
              OutputStream out = new SuFileOutputStream(bootctl)) {
             ShellUtils.pump(in, out);
diff --git a/core/src/main/res/raw/utils.sh b/core/src/main/res/raw/utils.sh
index 8251208d1..81f6c36cb 100644
--- a/core/src/main/res/raw/utils.sh
+++ b/core/src/main/res/raw/utils.sh
@@ -66,7 +66,7 @@ post_ota() {
   ./bootctl hal-info || return
   [ `./bootctl get-current-slot` -eq 0 ] && SLOT_NUM=1 || SLOT_NUM=0
   ./bootctl set-active-boot-slot $SLOT_NUM
-  echo '${0%/*}/../bootctl mark-boot-successful;rm -f ${0%/*}/../bootctl $0' > post-fs-data.d/post_ota.sh
+  echo "BCTRL=${1}/bootctl;\$BCTRL mark-boot-successful;rm -f \$BCTRL \$0" > post-fs-data.d/post_ota.sh
   chmod 755 post-fs-data.d/post_ota.sh
   cd /
 }