diff --git a/sound/core/ump_convert.c b/sound/core/ump_convert.c
index 164829d3e305..48ab3e1bd62e 100644
--- a/sound/core/ump_convert.c
+++ b/sound/core/ump_convert.c
@@ -454,7 +454,7 @@ static int do_convert_to_ump(struct snd_ump_endpoint *ump,
 	}
 
 	if (c & 0x80) {
-		bytes = cmd_bytes[(c >> 8) & 7];
+		bytes = cmd_bytes[(c >> 4) & 7];
 		cvt->buf[0] = c;
 		cvt->len = 1;
 		cvt->cmd_bytes = bytes;