diff --git a/doc/functions.xml b/doc/functions.xml
index e8ab8d97b913..f2d064023177 100644
--- a/doc/functions.xml
+++ b/doc/functions.xml
@@ -8,7 +8,7 @@
  </para>
  <xi:include href="functions/library.xml" />
  <xi:include href="functions/generators.xml" />
- <xi:include href="functions/debug.xml" />
+ <xi:include href="functions/debug.section.xml" />
  <xi:include href="functions/prefer-remote-fetch.xml" />
  <xi:include href="functions/nix-gitignore.section.xml" />
 </chapter>
diff --git a/doc/functions/debug.section.md b/doc/functions/debug.section.md
new file mode 100644
index 000000000000..b2d8589431ab
--- /dev/null
+++ b/doc/functions/debug.section.md
@@ -0,0 +1,5 @@
+# Debugging Nix Expressions {#sec-debug}
+
+Nix is a unityped, dynamic language, this means every value can potentially appear anywhere. Since it is also non-strict, evaluation order and what ultimately is evaluated might surprise you. Therefore it is important to be able to debug nix expressions.
+
+In the `lib/debug.nix` file you will find a number of functions that help (pretty-)printing values while evaluation is running. You can even specify how deep these values should be printed recursively, and transform them on the fly. Please consult the docstrings in `lib/debug.nix` for usage information.
diff --git a/doc/functions/debug.xml b/doc/functions/debug.xml
deleted file mode 100644
index c27421f12e76..000000000000
--- a/doc/functions/debug.xml
+++ /dev/null
@@ -1,14 +0,0 @@
-<section xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xmlns:xi="http://www.w3.org/2001/XInclude"
-         xml:id="sec-debug">
- <title>Debugging Nix Expressions</title>
-
- <para>
-  Nix is a unityped, dynamic language, this means every value can potentially appear anywhere. Since it is also non-strict, evaluation order and what ultimately is evaluated might surprise you. Therefore it is important to be able to debug nix expressions.
- </para>
-
- <para>
-  In the <literal>lib/debug.nix</literal> file you will find a number of functions that help (pretty-)printing values while evaluation is runnnig. You can even specify how deep these values should be printed recursively, and transform them on the fly. Please consult the docstrings in <literal>lib/debug.nix</literal> for usage information.
- </para>
-</section>