diff -ru a/alsa.c b/alsa.c
--- a/alsa.c	2024-06-05 19:43:42.987168221 -0000
+++ b/alsa.c	2024-06-05 19:44:48.530787408 -0000
@@ -139,7 +139,7 @@
 	return snd_hwdep_ioctl(hwdep, SNDRV_EMUX_IOCTL_MISC_MODE, &mode);
 }
 
-void seq_set_gus_bank(int bank)
+int seq_set_gus_bank(int bank)
 {
 	struct sndrv_emux_misc_mode mode;
 	mode.port = -1;