diff --git a/nixos/modules/services/x11/desktop-managers/kde5.nix b/nixos/modules/services/x11/desktop-managers/kde5.nix
index 060dda1a70a8..312e4d72585b 100644
--- a/nixos/modules/services/x11/desktop-managers/kde5.nix
+++ b/nixos/modules/services/x11/desktop-managers/kde5.nix
@@ -50,13 +50,13 @@ in
     security.setuidOwners = [
       {
         program = "kcheckpass";
-        source = "${kde5.plasma-workspace}/lib/libexec/kcheckpass";
+        source = "${kde5.plasma-workspace.out}/lib/libexec/kcheckpass";
         owner = "root";
         setuid = true;
       }
       {
         program = "start_kdeinit_wrapper";
-        source = "${kde5.plasma-workspace}/lib/libexec/kf5/start_kdeinit_wrapper";
+        source = "${kde5.kinit.out}/lib/libexec/kf5/start_kdeinit_wrapper";
         owner = "root";
         setuid = true;
       }