diff --git a/nvim/.config/nvim/fnl/dotfiles/core.fnl b/nvim/.config/nvim/fnl/dotfiles/core.fnl
index 5b9335e..c0274e9 100644
--- a/nvim/.config/nvim/fnl/dotfiles/core.fnl
+++ b/nvim/.config/nvim/fnl/dotfiles/core.fnl
@@ -65,6 +65,7 @@
     :tags "tags"
     :updatetime 300 ; per coc.vim for diagnostic messages
     :signcolumn "auto:1-3"
+    :colorcolumn 80
     :cmdheight 2 ; Better display for messages
     :undodir undo-dir
     :undolevels 1000