diff --git a/nixos/modules/installer/cd-dvd/installation-cd-graphical-calamares.nix b/nixos/modules/installer/cd-dvd/installation-cd-graphical-calamares.nix
index 76aa32b0022d..097a4eca51d5 100644
--- a/nixos/modules/installer/cd-dvd/installation-cd-graphical-calamares.nix
+++ b/nixos/modules/installer/cd-dvd/installation-cd-graphical-calamares.nix
@@ -11,9 +11,11 @@ in
 {
   imports = [ ./installation-cd-graphical-base.nix ];
 
+  # required for kpmcore to work correctly
+  programs.partition-manager.enable = true;
+
   environment.systemPackages = with pkgs; [
     # Calamares for graphical installation
-    libsForQt5.kpmcore
     calamares-nixos
     calamares-nixos-autostart
     calamares-nixos-extensions