--- sixfireusb-0.6.2/control.c	2013-02-04 03:18:31.000000000 +0100
+++ sixfireusb-0.6.2/control.c	2020-11-04 19:12:21.308854791 +0100
@@ -571,7 +571,7 @@
 		ret = snd_ctl_add(card, control);
 		if (ret < 0)
 			return ret;
-		ret = snd_ctl_add_slave(vmaster, control);
+		ret = snd_ctl_add_follower(vmaster, control);
 		if (ret < 0)
 			return ret;
 		i++;