diff --git a/doc/development/structure.rst b/doc/development/structure.rst
index ea9453494f..b5419f72a2 100644
--- a/doc/development/structure.rst
+++ b/doc/development/structure.rst
@@ -23,6 +23,9 @@ pretix/
         Helpers contain a very few modules providing workarounds for low-level flaws in
         Django or installed 3rd-party packages.
 
+    multidomain/
+        Additional code implementing our customized :ref:`URL handling <urlconf>`.
+
 static/
     Contains all static files (CSS, JavaScript, images)
 
diff --git a/doc/development/urlconfig.rst b/doc/development/urlconfig.rst
index fd86531f67..40017ed1dc 100644
--- a/doc/development/urlconfig.rst
+++ b/doc/development/urlconfig.rst
@@ -1,3 +1,5 @@
+.. _`urlconf`:
+
 Working with URLs
 =================