diff --git a/init.py b/init.py
index e271704..980ffa6 100644
--- a/init.py
+++ b/init.py
@@ -73,26 +73,15 @@ async def doc_upload_handler(request, params_kw, *args, **kwargs):
     try:
         userorgid = await env.get_userorgid()
         kb_id = params_kw.get("kb_id", "")
-        folder = params_kw.get("folder", "/")
+        file_name = params_kw.get("file_name", "upload.bin")
         if not kb_id:
             return json.dumps({"error": "kb_id required"})
 
-        # Read uploaded file from request
-        reader = await request.multipart()
-        file_data = None
-        file_name = None
-        content_type = None
-        while True:
-            part = await reader.next()
-            if part is None:
-                break
-            if part.name == "file":
-                file_name = part.filename or "upload.bin"
-                file_data = await part.read()
-                content_type = part.headers.get("Content-Type", "application/octet-stream")
+        # Read raw file data from request body
+        file_data = await request.read()
 
         if not file_data:
-            return json.dumps({"error": "no file uploaded"})
+            return json.dumps({"error": "no file data"})
 
         # Save file
         doc_id = uuid.uuid4().hex[:16]
@@ -105,7 +94,7 @@ async def doc_upload_handler(request, params_kw, *args, **kwargs):
             f.write(file_data)
 
         file_size = len(file_data)
-        file_type = _detect_file_type(file_name, content_type)
+        file_type = _detect_file_type(file_name, "application/octet-stream")
 
         # Create document record
         async with get_sor_context(env, 'rag') as sor:
@@ -114,7 +103,7 @@ async def doc_upload_handler(request, params_kw, *args, **kwargs):
                 "VALUES (${id}$, ${kb_id}$, ${file_name}$, ${file_type}$, ${file_size}$, ${file_path}$, ${mime_type}$, 'pending', ${org_id}$, NOW(), NOW())",
                 {"id": doc_id, "kb_id": kb_id, "file_name": file_name, "file_type": file_type,
                  "file_size": file_size, "file_path": "/idfile/files/" + saved_name,
-                 "mime_type": content_type, "org_id": userorgid})
+                 "mime_type": "application/octet-stream", "org_id": userorgid})
 
             # Update KB stats
             await sor.sqlExe(