diff --git a/source/index.rst b/source/index.rst
index b879c520..69f0485a 100644
--- a/source/index.rst
+++ b/source/index.rst
@@ -19,8 +19,8 @@ Contents
 
    1/Installing_lubuntu
    2/Applications
-   3/Sytem_Tools_and_Prefrences
-   4/Installing_Updating_And_Removing_Software
+   3/System_Tools_and_Prefrences.rst
+   4/Installing_Updating_and_Removing_Software
    5/Panel_Desktop_and_Runner
 
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