diff --git a/mediaID.go b/mediaID.go
index 4367f2e..702476a 100644
--- a/mediaID.go
+++ b/mediaID.go
@@ -55,6 +55,7 @@ func uploadThumb(path string) (mediaID string) {
 }
 
 func checkImageSanity() bool {
+	//TODO
 	//check file size should < 2M
 	fmt.Println(" should check image file size")