diff --git a/pkgs/desktops/xfce/core/libxfce4ui.nix b/pkgs/desktops/xfce/core/libxfce4ui.nix
index 4f0e7062e45..5675c09fed8 100644
--- a/pkgs/desktops/xfce/core/libxfce4ui.nix
+++ b/pkgs/desktops/xfce/core/libxfce4ui.nix
@@ -24,6 +24,8 @@ stdenv.mkDerivation rec {
       libstartup_notification
     ];
 
+  preFixup = "rm $out/share/icons/hicolor/icon-theme.cache";
+
   enableParallelBuilding = true;
 
   meta = {
diff --git a/pkgs/desktops/xfce/core/thunar-archive-plugin.nix b/pkgs/desktops/xfce/core/thunar-archive-plugin.nix
index 62b04caaa34..4776af3be32 100644
--- a/pkgs/desktops/xfce/core/thunar-archive-plugin.nix
+++ b/pkgs/desktops/xfce/core/thunar-archive-plugin.nix
@@ -13,6 +13,8 @@ stdenv.mkDerivation rec {
   buildInputs = [ pkgconfig thunar intltool exo gtk udev libxfce4ui libxfce4util xfconf ];
   enableParallelBuilding = true;
 
+  preFixup = "rm $out/share/icons/hicolor/icon-theme.cache";
+
   meta = {
     homepage = http://foo-projects.org/~benny/projects/thunar-archive-plugin/;
     description = "The Thunar Archive Plugin allows you to create and extract archive files using the file context menus in the Thunar file manager";