diff --git a/server/src/routes/assets.ts b/server/src/routes/assets.ts
index 4c9847fe..ed8d5944 100644
--- a/server/src/routes/assets.ts
+++ b/server/src/routes/assets.ts
@@ -50,7 +50,7 @@ export function assetRoutes(db: Db, storage: StorageService) {
 
     const contentType = (file.mimetype || "").toLowerCase();
     if (!isAllowedContentType(contentType)) {
-      res.status(422).json({ error: `Unsupported image type: ${contentType || "unknown"}` });
+      res.status(422).json({ error: `Unsupported file type: ${contentType || "unknown"}` });
       return;
     }
     if (file.buffer.length <= 0) {