diff --git a/system/macos/system.nix b/system/macos/system.nix
index 3210451..c078d5c 100644
--- a/system/macos/system.nix
+++ b/system/macos/system.nix
@@ -1,4 +1,4 @@
-{ ... }:
+{ config, ... }:
 {
   system.defaults = {
     dock = {
@@ -97,6 +97,6 @@
 
   system.activationScripts.postActivation.text = ''
     # Following line should allow us to avoid a logout/login cycle when changing settings
-    sudo -u tbingmann /System/Library/PrivateFrameworks/SystemAdministration.framework/Resources/activateSettings -u
+    sudo -u ${config.system.primaryUser} /System/Library/PrivateFrameworks/SystemAdministration.framework/Resources/activateSettings -u
   '';
 }