diff --git a/doc/trim.nvim.txt b/doc/trim.nvim.txt
index 5f32c3a..4d45565 100644
--- a/doc/trim.nvim.txt
+++ b/doc/trim.nvim.txt
@@ -59,7 +59,7 @@ HOW TO SETUP                                *trim.nvim-trim.nvim-how-to-setup*
       trim_last_line = true,
       trim_first_line = true,
       highlight = false,
-      highlight_bg = '#ff0000',
+      highlight_bg = '#ff0000', -- or 'red'
       highlight_ctermbg = 'red',
     }
 <