diff --git a/src/commons/pdf_tools.py b/src/commons/pdf_tools.py
index fb13a14..457cc7b 100644
--- a/src/commons/pdf_tools.py
+++ b/src/commons/pdf_tools.py
@@ -8,6 +8,7 @@ from django.template import RequestContext
 from django.http import HttpResponse
 
 
+# TODO: merge with src/commons/xls/xls_to_response.py => common def
 def pdf_to_response(content, filename=None):
     """Выводит content в django.http.HttpResponse, который и возвращает."""
     response = HttpResponse(content, content_type='application/pdf')