diff --git a/doc/index.rst b/doc/index.rst
index 2b2022345135d6fea81fda6e0bc5541b737f0794..2fbc7cba7498e5f69e2edc550f1fcdd9bea15831 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -3,7 +3,7 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
-.. include:: ../README.mdwn
+.. include:: ../README.md
 
 Other documentation
 ===================