diff --git a/audio/audio_test.go b/audio/audio_test.go
index aead69e44..51df4777b 100644
--- a/audio/audio_test.go
+++ b/audio/audio_test.go
@@ -76,9 +76,9 @@ func TestGC(t *testing.T) {
 		if want := 0; got == want {
 			return
 		}
-		// 100[ms] should be enough all the bytes are consumed.
+		// 200[ms] should be enough all the bytes are consumed.
 		// TODO: This is a darty hack. Would it be possible to use virtual time?
-		time.Sleep(100 * time.Millisecond)
+		time.Sleep(200 * time.Millisecond)
 	}
 	t.Errorf("time out")
 }