diff --git a/services/core/java/com/android/server/DeviceIdleController.java b/services/core/java/com/android/server/DeviceIdleController.java
index 16f4d04..05c7504 100644
--- a/services/core/java/com/android/server/DeviceIdleController.java
+++ b/services/core/java/com/android/server/DeviceIdleController.java
@@ -403,7 +403,9 @@
     private final BroadcastReceiver mInteractivityReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
-            updateInteractivityLocked();
+            synchronized (DeviceIdleController.this) {
+                updateInteractivityLocked();
+            }
         }
     };