diff --git a/container/mts/encoder_test.go b/container/mts/encoder_test.go
index fb32ac24..3c9c5dd5 100644
--- a/container/mts/encoder_test.go
+++ b/container/mts/encoder_test.go
@@ -191,7 +191,7 @@ func TestEncodePcm(t *testing.T) {
 	sampleSize := 2
 	blockSize := 16000
 	writeFreq := float64(sampleRate*sampleSize) / float64(blockSize)
-	e, err := NewEncoder(nopCloser{&buf}, (*testLogger)(t), PacketBasedPSI(10), Rate(int(writeFreq)), MediaType(EncodeAudio))
+	e, err := NewEncoder(nopCloser{&buf}, (*testLogger)(t), PacketBasedPSI(10), Rate(writeFreq), MediaType(EncodeAudio))
 	if err != nil {
 		t.Fatalf("could not create MTS encoder, failed with error: %v", err)
 	}