diff --git a/modules/nixvim/ftplugin/asciidoc.nix b/modules/nixvim/ftplugin/asciidoc.nix
index 33a44bc6..0d63df72 100644
--- a/modules/nixvim/ftplugin/asciidoc.nix
+++ b/modules/nixvim/ftplugin/asciidoc.nix
@@ -8,6 +8,7 @@
         vim.opt_local.linebreak = true
         vim.opt_local.makeprg = "${lib.getExe pkgs.asciidoctor} %"
         vim.opt_local.spell = true
+        vim.opt_local.textwidth = 100
 
         -- Convert lines into a list.
         vim.keymap.set("n", "<leader>l", "vip:norm I* <CR>")