diff --git a/reference/mongo/mongogridfscursor/key.xml b/reference/mongo/mongogridfscursor/key.xml
index 471a6421b5..4c43827f10 100644
--- a/reference/mongo/mongogridfscursor/key.xml
+++ b/reference/mongo/mongogridfscursor/key.xml
@@ -23,9 +23,36 @@
&reftitle.returnvalues;
- The current result's filename.
+ The current result's _id as a string.
+
+
+ &reftitle.changelog;
+
+
+
+
+
+ &Version;
+ &Description;
+
+
+
+
+ 1.3.0
+
+ The document's _id is returned as a string value,
+ since the key should be unique. Pre-1.3.0, filename
+ was returned.
+
+
+
+
+
+
+
+