diff --git a/docs/source/docutils.conf b/docs/source/docutils.conf
index 0c00c846887..e2bef654a4a 100644
--- a/docs/source/docutils.conf
+++ b/docs/source/docutils.conf
@@ -1,2 +1,3 @@
+# Necessary for the table generated by autosummary to look decent
 [html writers]
 table_style: colwidths-auto