diff --git a/services/core/java/com/android/server/power/PowerManagerService.java b/services/core/java/com/android/server/power/PowerManagerService.java
index bf9c385c8f74e..a94484ae0bb44 100644
--- a/services/core/java/com/android/server/power/PowerManagerService.java
+++ b/services/core/java/com/android/server/power/PowerManagerService.java
@@ -87,6 +87,7 @@ import com.android.server.LockGuard;
 import com.android.server.RescueParty;
 import com.android.server.ServiceThread;
 import com.android.server.SystemService;
+import com.android.server.UiThread;
 import com.android.server.Watchdog;
 import com.android.server.am.BatteryStatsService;
 import com.android.server.lights.Light;
@@ -2732,9 +2733,9 @@ public final class PowerManagerService extends SystemService
         };
 
         // ShutdownThread must run on a looper capable of displaying the UI.
-        Message msg = Message.obtain(mHandler, runnable);
+        Message msg = Message.obtain(UiThread.getHandler(), runnable);
         msg.setAsynchronous(true);
-        mHandler.sendMessage(msg);
+        UiThread.getHandler().sendMessage(msg);
 
         // PowerManager.reboot() is documented not to return so just wait for the inevitable.
         if (wait) {