diff --git a/packages/SystemUI/tests/utils/src/com/android/systemui/broadcast/FakeBroadcastDispatcher.kt b/packages/SystemUI/tests/utils/src/com/android/systemui/broadcast/FakeBroadcastDispatcher.kt
index 52e0c982cae0c..ad086ff9c664c 100644
--- a/packages/SystemUI/tests/utils/src/com/android/systemui/broadcast/FakeBroadcastDispatcher.kt
+++ b/packages/SystemUI/tests/utils/src/com/android/systemui/broadcast/FakeBroadcastDispatcher.kt
@@ -22,12 +22,12 @@ import android.content.IntentFilter
 import android.os.Handler
 import android.os.Looper
 import android.os.UserHandle
-import android.util.ArraySet
 import android.util.Log
 import com.android.systemui.SysuiTestableContext
 import com.android.systemui.broadcast.logging.BroadcastDispatcherLogger
 import com.android.systemui.dump.DumpManager
 import com.android.systemui.settings.UserTracker
+import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.Executor
 
 class FakeBroadcastDispatcher(
@@ -50,7 +50,7 @@ class FakeBroadcastDispatcher(
         PendingRemovalStore(logger)
     ) {
 
-    val registeredReceivers = ArraySet<BroadcastReceiver>()
+    val registeredReceivers: MutableSet<BroadcastReceiver> = ConcurrentHashMap.newKeySet()
 
     override fun registerReceiverWithHandler(
         receiver: BroadcastReceiver,