diff --git a/doc/en/recwarn.txt b/doc/en/recwarn.txt
index 743e41018..faa1ad761 100644
--- a/doc/en/recwarn.txt
+++ b/doc/en/recwarn.txt
@@ -2,6 +2,8 @@
 Asserting deprecation and other warnings
 =====================================================
 
+.. _function_argument:
+
 The recwarn function argument
 ------------------------------------
 
@@ -24,6 +26,9 @@ The ``recwarn`` function argument provides these methods:
 * ``pop(category=None)``: return last warning matching the category.
 * ``clear()``: clear list of warnings
 
+
+.. _ensuring_function_triggers:
+
 Ensuring a function triggers a deprecation warning
 -------------------------------------------------------