diff --git a/src/audio_player_portaudio.h b/src/audio_player_portaudio.h
index 4183cd1e6..a3e851e05 100644
--- a/src/audio_player_portaudio.h
+++ b/src/audio_player_portaudio.h
@@ -95,7 +95,7 @@ class PortAudioPlayer final : public AudioPlayer {
 
 public:
 	/// @brief Constructor
-	PortAudioPlayer(AudioProvider *provider);
+	PortAudioPlayer(agi::AudioProvider *provider);
 
 	/// @brief Destructor
 	~PortAudioPlayer();