diff --git a/pkgs/build-support/build-fhs-userenv/chroot-user.rb b/pkgs/build-support/build-fhs-userenv/chroot-user.rb
index 11f672acb9ff..833aab16ceb1 100755
--- a/pkgs/build-support/build-fhs-userenv/chroot-user.rb
+++ b/pkgs/build-support/build-fhs-userenv/chroot-user.rb
@@ -16,6 +16,7 @@ mounts = { '/' => 'host',
 # Propagate environment variables
 envvars = [ 'TERM',
             'DISPLAY',
+            'XAUTHORITY',
             'HOME',
             'XDG_RUNTIME_DIR',
             'LANG',