diff --git a/src/Discord.Net.Rest/API/Rest/UploadFileParams.cs b/src/Discord.Net.Rest/API/Rest/UploadFileParams.cs
index 6340c3e38..67a690e4d 100644
--- a/src/Discord.Net.Rest/API/Rest/UploadFileParams.cs
+++ b/src/Discord.Net.Rest/API/Rest/UploadFileParams.cs
@@ -51,7 +51,7 @@ namespace Discord.API.Rest
             if (Stickers.IsSpecified)
                 payload["sticker_ids"] = Stickers.Value;
             if (Flags.IsSpecified)
-                payload["flags"] = Flags;
+                payload["flags"] = Flags.Value;
 
             List<object> attachments = new();