diff --git a/pkgs/desktops/deepin/artwork/deepin-icon-theme/default.nix b/pkgs/desktops/deepin/artwork/deepin-icon-theme/default.nix
index dbb3dd5bf5ab..9ab40fc0b337 100644
--- a/pkgs/desktops/deepin/artwork/deepin-icon-theme/default.nix
+++ b/pkgs/desktops/deepin/artwork/deepin-icon-theme/default.nix
@@ -30,7 +30,7 @@ stdenvNoCC.mkDerivation rec {
 
   dontDropIconThemeCache = true;
 
-  postFixup = ''
+  preFixup = ''
     for theme in $out/share/icons/*; do
       gtk-update-icon-cache $theme
     done