diff --git a/device/alsa/alsa.go b/device/alsa/alsa.go
index 87eed7dd..815d885d 100644
--- a/device/alsa/alsa.go
+++ b/device/alsa/alsa.go
@@ -281,7 +281,7 @@ func (d *ALSA) open() error {
 
 	var rate int
 	foundRate := false
-	for r := range rates {
+	for _, r := range rates {
 		if r < int(d.SampleRate) {
 			continue
 		}