diff --git a/src/Common/MultiMediaSourceMuxer.h b/src/Common/MultiMediaSourceMuxer.h
index d019b107..10f63eae 100644
--- a/src/Common/MultiMediaSourceMuxer.h
+++ b/src/Common/MultiMediaSourceMuxer.h
@@ -156,7 +156,7 @@ protected:
 private:
     RtmpMediaSourceMuxer::Ptr _rtmp;
     RtspMediaSourceMuxer::Ptr _rtsp;
-    Listener *_listener;
+    Listener *_listener = nullptr;
 };
 
 
diff --git a/src/Player/PlayerBase.h b/src/Player/PlayerBase.h
index 0dd74bf8..8fb397b3 100644
--- a/src/Player/PlayerBase.h
+++ b/src/Player/PlayerBase.h
@@ -282,7 +282,7 @@ public:
 protected:
 	void onAddTrack(const Track::Ptr &track);
 protected:
-	Listener *_listener;
+	Listener *_listener = nullptr;
 	AudioTrack::Ptr _audioTrack;
 	VideoTrack::Ptr _videoTrack;
 	Ticker _ticker;