diff --git a/common/kitty/kitty.conf b/common/kitty/kitty.conf
index 7a2a004..4960f69 100644
--- a/common/kitty/kitty.conf
+++ b/common/kitty/kitty.conf
@@ -110,5 +110,6 @@ touch_scroll_multiplier 5.0
 include current-theme.conf
 # END_KITTY_THEME
 
-# same as bg
+# same as bg, used by tmux to ensure the same bg color is used in pane border
+# and statusline
 color19 #100814
\ No newline at end of file