diff --git a/rtmp/rtmp_test.go b/rtmp/rtmp_test.go
index 618f2b95..be4908a6 100644
--- a/rtmp/rtmp_test.go
+++ b/rtmp/rtmp_test.go
@@ -243,8 +243,9 @@ func TestFromFile(t *testing.T) {
 	}
 	defer f.Close()
 
+	rs := &rtmpSender{conn: c}
 	// Pass RTMP session, true for audio, true for video, and 25 FPS
-	flvEncoder, err := flv.NewEncoder(c, true, true, 25)
+	flvEncoder, err := flv.NewEncoder(rs, true, true, 25)
 	if err != nil {
 		t.Fatalf("failed to create encoder: %v", err)
 	}