diff --git a/contrib/advanced-python/index.md b/contrib/advanced-python/index.md
index 82596a2..c6a4bc2 100644
--- a/contrib/advanced-python/index.md
+++ b/contrib/advanced-python/index.md
@@ -1,3 +1,3 @@
 # List of sections
 
-- [Section title](filename.md)
+- [Classes_and_Objects](classes.md)