1 files changed, 1 insertions, 1 deletions
diff --git a/plat.h b/plat.h
index 9a0d969..fdcb1a9 100644
--- a/plat.h
+++ b/plat.h
@@ -28,7 +28,7 @@ void plat_video_close(void);
 unsigned plat_cpu_ticks(void);
 
 float plat_sound_capacity(void);
-void plat_sound_write(const struct audio_frame *data, int frames);
+extern void (*plat_sound_write)(const struct audio_frame *data, int frames);
 void plat_sound_resize_buffer(void);
 
 #endif /* __PLAT_H__ */