diff --git a/payload.go b/payload.go
index 5e2e2f2..180c54a 100644
--- a/payload.go
+++ b/payload.go
@@ -345,6 +345,7 @@ func trimSpaces(s string) string {
 	return strings.TrimSpace(s)
 }
 
+// TODO(marko): Move to separate package
 func ReadFileLines(path string) ([]string, error) {
 	f, err := os.Open(path)
 	if err != nil {