diff --git a/lib/naughty/dbus.lua b/lib/naughty/dbus.lua
index 3c8d20899..176371ef9 100644
--- a/lib/naughty/dbus.lua
+++ b/lib/naughty/dbus.lua
@@ -55,7 +55,7 @@ local urgency = {
 -- @tfield table 2 normal urgency
 -- @tfield table 3 critical urgency
 -- @table config.mapping
-dbus.config.mapping = cst.mapping
+dbus.config.mapping = cst.config.mapping
 
 local function sendActionInvoked(notificationId, action)
     if bus_connection then