diff --git a/doc/index.rst b/doc/index.rst
index 3918aaae52..81777c48ca 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -2,6 +2,9 @@
 Account Stock Shipment Cost Module
 ##################################
 
+The *Account Stock Shipment Cost Module* allocates shipment cost based on
+invoice.
+
 .. toctree::
    :maxdepth: 2