diff --git "a/api/src/routes/channels/\043channel_id/messages/index.ts" "b/api/src/routes/channels/\043channel_id/messages/index.ts"
index f3c3503..53b8b43 100644
--- "a/api/src/routes/channels/\043channel_id/messages/index.ts"
+++ "b/api/src/routes/channels/\043channel_id/messages/index.ts"
@@ -161,7 +161,7 @@
 // TODO: config max upload size
 const messageUpload = multer({
 	limits: {
-		fileSize: 1024 * 1024 * 100,
+		fileSize: Config.get().limits.message.maxAttachmentSize,
 		fields: 10,
 		// files: 1
 	},