diff --git a/docsite/rst/common_return_values.rst b/docsite/rst/common_return_values.rst
index adfdc5a78a..07656d9f46 100644
--- a/docsite/rst/common_return_values.rst
+++ b/docsite/rst/common_return_values.rst
@@ -14,6 +14,10 @@ This document covers return values common to all modules.
 
 
 
+backup_file
+```````````
+For those modules that implement `backup=no|yes` when manipulating files, a path to the backup file created.
+
 changed
 ```````
 A boolean indicating if the task had to make changes.