diff --git a/docs/manipulation.rst b/docs/manipulation.rst
index f86e71e..5130b8c 100644
--- a/docs/manipulation.rst
+++ b/docs/manipulation.rst
@@ -1,4 +1,4 @@
-.. _null:
+.. _manipulating_data_structures:
 
 Manipulating Data Structures
 ============================