diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index c7da38348035..b1c78db0d470 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1238,7 +1238,7 @@ static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval,
 				  (cval->control << 8) | minchn,
 				  &cval->res) < 0) {
 			cval->res = 1;
-		} else {
+		} else if (cval->head.mixer->protocol == UAC_VERSION_1) {
 			int last_valid_res = cval->res;
 
 			while (cval->res > 1) {