diff --git a/frontend/src/lib/assetUrl.ts b/frontend/src/lib/assetUrl.ts
index 9b1821b..2f70c79 100644
--- a/frontend/src/lib/assetUrl.ts
+++ b/frontend/src/lib/assetUrl.ts
@@ -81,10 +81,11 @@ const BATCH_DELAY_MS = 10; // Small delay to batch concurrent requests
 const fetchPresignedUrlsBatch = async (
   urls: string[],
 ): Promise<Record<string, string>> => {
-  // Use relative path since axios.defaults.baseURL is already set
+  // Use explicit baseURLApi to avoid double /api/ prefix issues
   const response = await axios.post<{ presignedUrls: Record<string, string> }>(
-    '/file/presign',
+    `${baseURLApi}/file/presign`,
     { urls },
+    { baseURL: '' }, // Override baseURL to prevent duplication
   );
 
   // Cache the results