diff --git a/include/audio/libretro_audio_device.hpp b/include/audio/libretro_audio_device.hpp
index 5b3a70c1..9c6d19f8 100644
--- a/include/audio/libretro_audio_device.hpp
+++ b/include/audio/libretro_audio_device.hpp
@@ -3,7 +3,7 @@
 
 #include "audio/audio_device_interface.hpp"
 
-class LibretroAudioDevice : public AudioDeviceInterface {
+class LibretroAudioDevice final : public AudioDeviceInterface {
 	bool initialized = false;
 
   public:
diff --git a/include/audio/miniaudio_device.hpp b/include/audio/miniaudio_device.hpp
index deb6e31a..5cf7c801 100644
--- a/include/audio/miniaudio_device.hpp
+++ b/include/audio/miniaudio_device.hpp
@@ -6,7 +6,7 @@
 #include "audio/audio_device_interface.hpp"
 #include "miniaudio.h"
 
-class MiniAudioDevice : public AudioDeviceInterface {
+class MiniAudioDevice final : public AudioDeviceInterface {
 	static constexpr ma_uint32 sampleRate = 32768;  // 3DS sample rate
 	static constexpr ma_uint32 channelCount = 2;    // Audio output is stereo