diff --git a/tools.go b/tools.go
index ac165d9..9ede94c 100644
--- a/tools.go
+++ b/tools.go
@@ -273,7 +273,7 @@ func (t *Tools) UploadFiles(r *http.Request, uploadDir string, rename ...bool) (
 		t.MaxFileSize = defaultMaxUpload
 	}
 
-	// Parse the form, so we have access to the file.
+	// Parse the form, so we have access to the file. Payload is limited to MaxFileSize.
 	err = r.ParseMultipartForm(int64(t.MaxFileSize))
 	if err != nil {
 		return nil, fmt.Errorf("error parsing form data: %v", err)