diff --git a/work/msgaudit/README.md b/work/msgaudit/README.md
index 28068b9..9d4a4b2 100644
--- a/work/msgaudit/README.md
+++ b/work/msgaudit/README.md
@@ -64,7 +64,7 @@ func main() {
 
 		if chatInfo.Type == "image" {
 			image, _ := chatInfo.GetImageMessage()
-			sdkfileid := image.Image.SdkFileId
+			sdkfileid := image.Image.SdkFileID
 
 			isFinish := false
 			buffer := bytes.Buffer{}