diff --git a/goutubedl_test.go b/goutubedl_test.go
index 7c3a156..ce9f3b5 100644
--- a/goutubedl_test.go
+++ b/goutubedl_test.go
@@ -323,6 +323,7 @@ func TestDownloadSections(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
+	defer f.Close()
 	_, err = io.Copy(f, dr)
 	if err != nil {
 		t.Fatal(err)