diff --git a/libs/audio/source/engine.cpp b/libs/audio/source/engine.cpp
index 93bcee3e..35f0810f 100644
--- a/libs/audio/source/engine.cpp
+++ b/libs/audio/source/engine.cpp
@@ -179,7 +179,7 @@ namespace psemek::audio
 	engine::impl::impl()
 		: sdl_init(sdl2::init(SDL_INIT_AUDIO))
 	{
-		if (Mix_OpenAudio(frequency, AUDIO_S16SYS, 2, 4096) != 0)
+		if (Mix_OpenAudio(engine::frequency, AUDIO_S16SYS, engine::channels, 4096) != 0)
 			mix_fail("Mix_OpenAudio: ");
 
 		Mix_ChannelFinished(&channel_finished);
@@ -260,11 +260,11 @@ namespace psemek::audio
 	{
 		Mix_Chunk * chunk = static_cast<Mix_Chunk *>(malloc(sizeof(Mix_Chunk)));
 		chunk->allocated = copy ? 1 : 0;
-		chunk->alen = sample_count * 2;
+		chunk->alen = sample_count * sizeof(std::int16_t);
 		chunk->volume = 128;
 		if (copy)
 		{
-			chunk->abuf = static_cast<Uint8 *>(malloc(sample_count * 2));
+			chunk->abuf = static_cast<Uint8 *>(malloc(sample_count * sizeof(std::int16_t)));
 			std::copy(data, data + sample_count, reinterpret_cast<std::int16_t *>(chunk->abuf));
 		}
 		else