diff --git a/rc/filetype/gluon.kak b/rc/filetype/gluon.kak
index b6ec9925..2298737c 100644
--- a/rc/filetype/gluon.kak
+++ b/rc/filetype/gluon.kak
@@ -80,8 +80,8 @@ define-command -hidden gluon-trim-indent %{
 
 define-command -hidden gluon-indent-on-new-line %{
     evaluate-commands -draft -itersel %{
-        # copy // comments prefix and following white spaces
-        try %{ execute-keys -draft k <a-x> s ^\h*\K//\h* <ret> y gh j P }
+        # copy // and /// comments prefix and following white spaces
+        try %{ execute-keys -draft k <a-x> s ^\h*\K///?\h* <ret> y gh j P }
         # preserve previous line indent
         try %{ execute-keys -draft \; K <a-&> }
         # filter previous line