diff --git a/services/audioflinger/PlaybackTracks.h b/services/audioflinger/PlaybackTracks.h
index 4fd72a7..56be433 100644
--- a/services/audioflinger/PlaybackTracks.h
+++ b/services/audioflinger/PlaybackTracks.h
@@ -22,11 +22,16 @@
 // Checks and monitors OP_PLAY_AUDIO
 class OpPlayAudioMonitor : public RefBase {
 public:
-    OpPlayAudioMonitor(uid_t uid, audio_usage_t usage, int id, audio_stream_type_t streamType);
     ~OpPlayAudioMonitor() override;
     bool hasOpPlayAudio() const;
 
+    static sp<OpPlayAudioMonitor> createIfNeeded(
+            uid_t uid, audio_usage_t usage, int id, audio_stream_type_t streamType);
+
 private:
+    OpPlayAudioMonitor(uid_t uid, audio_usage_t usage, int id);
+    void onFirstRef() override;
+
     AppOpsManager mAppOpsManager;
 
     class PlayAudioOpCallback : public BnAppOpsCallback {
@@ -209,7 +214,9 @@
 
     int fastIndex() const { return mFastIndex; }
 
-    bool isPlaybackRestricted() const { return !mOpPlayAudioMonitor->hasOpPlayAudio(); }
+    bool isPlaybackRestricted() const {
+        // The monitor is only created for tracks that can be silenced.
+        return mOpPlayAudioMonitor ? !mOpPlayAudioMonitor->hasOpPlayAudio() : false; }
 
 protected: