diff --git a/docs/configuration/advanced.md b/docs/configuration/advanced.md
index bd2db27..921b7eb 100644
--- a/docs/configuration/advanced.md
+++ b/docs/configuration/advanced.md
@@ -10,6 +10,8 @@ uda.taskwarrior-tui.selection.bold=yes
 uda.taskwarrior-tui.selection.italic=no
 uda.taskwarrior-tui.selection.dim=no
 uda.taskwarrior-tui.selection.blink=no
+uda.taskwarrior-tui.mark.indicator=☑
+uda.taskwarrior-tui.unmark.indicator=☐
 uda.taskwarrior-tui.calendar.months-per-row=4
 uda.taskwarrior-tui.task-report.show-info=true
 uda.taskwarrior-tui.task-report.looping=true