diff --git a/app/views/mark_files/index.json.jbuilder b/app/views/mark_files/index.json.jbuilder
index d3c080134..709be77b8 100644
--- a/app/views/mark_files/index.json.jbuilder
+++ b/app/views/mark_files/index.json.jbuilder
@@ -4,7 +4,7 @@ json.count @files_result['NumFiles']
 json.files do
   json.array! @files_result['Files']  do |file|
     mark_file = @mark_files.select{|mark| mark.file_path.to_s == file['Name']}.first
-    json.sha Base64.encode64(file['Name'].to_s)
+    json.file_path_sha Base64.strict_encode64(file['Name'].to_s)
     json.name file['Name']
     json.mark_as_read mark_file.present? ? mark_file.mark_as_read : false
     # json.updated_after_read mark_file.present? ? mark_file.updated_after_read : false