diff --git a/nixos/modules/services/x11/desktop-managers/plasma5.nix b/nixos/modules/services/x11/desktop-managers/plasma5.nix
index 8cc579af2ca0..a9b0b8dc23fb 100644
--- a/nixos/modules/services/x11/desktop-managers/plasma5.nix
+++ b/nixos/modules/services/x11/desktop-managers/plasma5.nix
@@ -238,6 +238,7 @@ in
           kidletime
           kimageformats
           kinit
+          kirigami2  # In system profile for SDDM theme. TODO: wrapper.
           kio
           kjobwidgets
           knewstuff