diff --git a/docs/howto-develop.rst b/docs/howto-develop.rst
index acdc7bd..108740a 100644
--- a/docs/howto-develop.rst
+++ b/docs/howto-develop.rst
@@ -10,7 +10,7 @@ Run NixOS tests
 ---------------
 
 To run the test suite, you need to enable `Nix Flakes
-<https://nixos.wiki/wiki/Flakes#Installing_flakes>`_.
+<https://nixos.wiki/wiki/Flakes#Installing_flakes>`__.
 
 You can then run the testsuite via
 
@@ -37,7 +37,7 @@ For the syntax, see the `RST/Sphinx primer
 <https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html>`_.
 
 To build the documentation, you need to enable `Nix Flakes
-<https://nixos.wiki/wiki/Flakes#Installing_flakes>`_.
+<https://nixos.wiki/wiki/Flakes#Installing_flakes>`__.
 
 
 ::