diff --git a/services/core/java/com/android/server/policy/LegacyGlobalActions.java b/services/core/java/com/android/server/policy/LegacyGlobalActions.java
index 5e4c801d90fbc..a5969a88008d5 100644
--- a/services/core/java/com/android/server/policy/LegacyGlobalActions.java
+++ b/services/core/java/com/android/server/policy/LegacyGlobalActions.java
@@ -135,6 +135,9 @@ class LegacyGlobalActions implements DialogInterface.OnDismissListener, DialogIn
         filter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
         filter.addAction(Intent.ACTION_SCREEN_OFF);
         filter.addAction(TelephonyManager.ACTION_EMERGENCY_CALLBACK_MODE_CHANGED);
+        // By default CLOSE_SYSTEM_DIALOGS broadcast is sent only for current user, which is user
+        // 10 on devices with headless system user enabled.
+        // In order to receive the broadcast, register the broadcast receiver with UserHandle.ALL.
         context.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL, filter, null, null);
 
         mHasTelephony =