diff --git a/pkgs/sddm-theme-utah/default.nix b/pkgs/sddm-theme-utah/default.nix
index 0ffbe47..626a914 100644
--- a/pkgs/sddm-theme-utah/default.nix
+++ b/pkgs/sddm-theme-utah/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, plasma-workspace }:
+{ lib, stdenv, fetchurl, kdePackages }:
 stdenv.mkDerivation {
   pname = "sddm-theme-utah";
   version = "1.0";
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   dontUnpack = true;
   installPhase = ''
     mkdir -p $out/share/sddm/themes/
-    cp -aR ${plasma-workspace}/share/sddm/themes/breeze $out/share/sddm/themes/sddm-theme-custom
+    cp -aR ${kdePackages.plasma-workspace}/share/sddm/themes/breeze $out/share/sddm/themes/sddm-theme-custom
     chmod +w $out/share/sddm/themes/sddm-theme-custom $out/share/sddm/themes/sddm-theme-custom/theme.conf
     cp -aR $src $out/share/sddm/themes/sddm-theme-custom/background.png
     sed -i 's/background=.*/background=background.png/g' $out/share/sddm/themes/sddm-theme-custom/theme.conf