diff --git a/redbot/cogs/mod/settings.py b/redbot/cogs/mod/settings.py
index 2bd52f230..b482c7b64 100644
--- a/redbot/cogs/mod/settings.py
+++ b/redbot/cogs/mod/settings.py
@@ -84,7 +84,7 @@ class ModSettings(MixinMeta):
         else:
             msg += _("Default message history delete on ban: Don't delete any\n")
         msg += _("Default tempban duration: {duration}").format(
-            humanize_timedelta(seconds=default_tempban_duration)
+            duration=humanize_timedelta(seconds=default_tempban_duration)
         )
         await ctx.send(box(msg))