diff --git a/pyproject.toml b/pyproject.toml
index 52a3ccb..96a20cb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "HospitalAssistantBackend"
-version = "1.5.10"
+version = "1.5.11"
 description = "Backend for Hospital Assistant"
 readme = "README.md"
 requires-python = ">=3.13,<3.14"
diff --git a/src/apps/download/v1/router.py b/src/apps/download/v1/router.py
index 99bc037..c8787ec 100644
--- a/src/apps/download/v1/router.py
+++ b/src/apps/download/v1/router.py
@@ -24,12 +24,15 @@ async def download_file(token: str):
         raise e.NotFoundException
 
     data = loads(file_data)
-    file_bytes = b64decode(data['data'])
+    file_name = data['filename']
+    file_bytes = b64decode(data['data'].strip(), validate=True)
+    print(f'Header: {file_bytes[:8].hex(" ")}')
 
     return Response(
         content=file_bytes,
         media_type=data['content_type'],
         headers={
-            'Content-Disposition': f'attachment; filename="{data["filename"]}"'
+            'Content-Disposition': f'attachment; filename="{file_name}"',
+            'Content-Length': str(len(file_bytes)),
         },
     )