diff --git a/apps/document_indexing/filesystem.py b/apps/document_indexing/filesystem.py
index b29f63fb74..bf6ead9655 100644
--- a/apps/document_indexing/filesystem.py
+++ b/apps/document_indexing/filesystem.py
@@ -22,7 +22,7 @@ def assemble_suffixed_filename(filename, suffix=0):
 
 
 def assemble_path_from_list(directory_list):
-    return os.sep.join(directory_list)
+    return os.path.normpath(os.sep.join(directory_list))
 
 
 def get_instance_path(index_instance):