diff --git a/.config/kak/autoload/util.kak b/.config/kak/autoload/util.kak
index 673dfcf9..3185b234 100644
--- a/.config/kak/autoload/util.kak
+++ b/.config/kak/autoload/util.kak
@@ -15,6 +15,10 @@ insert-date -params 0.. %{
 alias global date insert-date
 
 define-command -params 2 \
+-docstring %{
+    Swap all occurrence of the first parameter with the second in
+    selection.
+} \
 swap %{
     evaluate-commands -save-regs | %{
         set-register | %exp{