diff --git a/src/propagation/doc/propagation.rst b/src/propagation/doc/propagation.rst
index dd7101016..5e5bc9917 100644
--- a/src/propagation/doc/propagation.rst
+++ b/src/propagation/doc/propagation.rst
@@ -1,6 +1,8 @@
 .. include:: replace.txt
 .. highlight:: cpp
 
+.. _Propagation:
+
 Propagation
 -----------