diff --git a/core/home/configs.nix b/core/home/configs.nix
index c6ec60c..15fe829 100644
--- a/core/home/configs.nix
+++ b/core/home/configs.nix
@@ -51,7 +51,15 @@ let
 
 in
 {
-  xdg.configFile = configMappings;
+  xdg.configFile = configMappings // {
+    # mako reads ~/.config/mako/config by default. The themed Nomarchy
+    # config (urgency rules, app filters, button handlers) lives under
+    # nomarchy/default/mako/core.ini for organizational reasons, so wire
+    # it explicitly here. Without this, mako silently falls back to its
+    # built-in defaults and every Nomarchy notification customization is
+    # inert.
+    "mako/config".source = lib.mkDefault ./config/nomarchy/default/mako/core.ini;
+  };
 
   home.file.".XCompose" = lib.mkDefault {
     source = ./config/nomarchy/default/xcompose;