diff --git a/.config/kak/autoload/filetype/mermaid.kak b/.config/kak/autoload/filetype/mermaid.kak
index 2c300775..6d0edab8 100644
--- a/.config/kak/autoload/filetype/mermaid.kak
+++ b/.config/kak/autoload/filetype/mermaid.kak
@@ -17,8 +17,10 @@ hook global WinSetOption filetype=mermaid %{
 provide-module mermaid %—
     # TODO: regex highlighting (treesitter is overkill lol)
     define-command -hidden mermaid-indent-on-new-line %~
-        # preserve prev line indent
+        # preserve previous line indent
         try %{ execute-keys -draft <semicolon> K <a-&> }
+        # remove trailing white spaces
+        try %{ execute-keys -draft k x s \h+$ <ret> d }
     ~
 
     define-command -hidden mermaid-trim-indent %{