diff --git a/source/3/3.2/Prefrences.rst b/source/3/3.2/Prefrences.rst
index 318b0d8a..922e491b 100644
--- a/source/3/3.2/Prefrences.rst
+++ b/source/3/3.2/Prefrences.rst
@@ -18,4 +18,6 @@ Chapter 3.2 Prefrences
   3.2.12/power_management
   3.2.13/session_settings
   3.2.14/shortcut_keys
+  3.2.15/users_and_groups
+  3.2.16/window_effects