diff --git a/sdrbase/audio/audioinputdevice.h b/sdrbase/audio/audioinputdevice.h
index f7341e803..78ff4f01a 100644
--- a/sdrbase/audio/audioinputdevice.h
+++ b/sdrbase/audio/audioinputdevice.h
@@ -148,7 +148,6 @@ private:
 	void stop();
 
 	friend class AudioOutputPipe;
-    friend class AudioInput;
 
 private slots:
     void handleInputMessages();