--- a/tools/qdoc3/mangenerator.cpp	Mon Jun 21 22:38:13 2010 +0100
+++ b/tools/qdoc3/mangenerator.cpp	Thu Jul 22 16:41:55 2010 +0100
@@ -187,7 +187,7 @@
     generateFooter();
 }
 
-QString ManGenerator::fileExtension(const Node * /* node */)
+QString ManGenerator::fileExtension(const Node * /* node */) const
 {
     return "3qt";
 }