diff --git a/gio/gsettings.c b/gio/gsettings.c
index ab7f43835..e36e96f15 100644
--- a/gio/gsettings.c
+++ b/gio/gsettings.c
@@ -159,6 +159,11 @@
  *       <default>(20,30)</default>
  *     </key>
  *
+ *     <key name="empty-string" type="s">
+ *       <default>""</default>
+ *       <summary>Empty strings have to be provided in GVariant form</summary>
+ *     </key>
+ *
  *   </schema>
  * </schemalist>
  * ]|