diff -urN devhelp-2.32.0/src/dh-book-manager.c devhelp-2.32.0.new//src/dh-book-manager.c
--- devhelp-2.32.0/src/dh-book-manager.c	2010-09-13 12:10:02.000000000 +0200
+++ devhelp-2.32.0.new//src/dh-book-manager.c	2010-09-30 22:25:57.471564288 +0200
@@ -145,6 +145,10 @@
         dir = g_build_filename (data_dir, "gtk-doc", "html", NULL);
         book_manager_add_from_dir (book_manager, dir);
         g_free (dir);
+        
+        dir = g_build_filename (data_dir, "doc", "gtk-doc", "html", NULL);
+        book_manager_add_from_dir (book_manager, dir);
+        g_free (dir);
 
         dir = g_build_filename (data_dir, "devhelp", "books", NULL);
         book_manager_add_from_dir (book_manager, dir);