diff --git a/client/decoders.go b/client/decoders.go
index 30ba3c30..82d0d6f6 100644
--- a/client/decoders.go
+++ b/client/decoders.go
@@ -419,7 +419,7 @@ func decodeGroupPttStoreResponse(_ *QQClient, _ uint16, payload []byte) (interfa
 		}, nil
 	}
 	if rsp.BoolFileExit {
-		return imageUploadResponse{IsExists: true}, nil
+		return pttUploadResponse{IsExists: true}, nil
 	}
 	return pttUploadResponse{
 		UploadKey:  rsp.UpUkey,