diff --git a/sources/Gnome.metadata b/sources/Gnome.metadata
index 2e7d7cbb6..6245189b7 100644
--- a/sources/Gnome.metadata
+++ b/sources/Gnome.metadata
@@ -526,6 +526,7 @@
   </data>
 </rule>
 
+<!-- Use gchar* instead of guchar*, when the value is realy a string -->
 <rule>
   <class name="GnomePrintConfig">
     <method>Get</method>