diff --git a/wm/nixos.nix b/wm/nixos.nix
index e120c84..f3091dc 100644
--- a/wm/nixos.nix
+++ b/wm/nixos.nix
@@ -60,7 +60,7 @@
       partOf = [ "graphical-session.target" ];
       serviceConfig = {
         Type = "simple";
-        ExecStart = "${pkgs.libsForQt5.polkit-kde-agent}/libexec/polkit-kde-authentication-agent-1";
+        ExecStart = "${pkgs.kdePackages.polkit-kde-agent-1}/libexec/polkit-kde-authentication-agent-1";
         Restart = "on-failure";
         RestartSec = 1;
         TimeoutStopSec = 10;