diff --git a/nixos/tests/systemd-confinement.nix b/nixos/tests/systemd-confinement.nix
index d04e4a3f867c..e6a308f46d27 100644
--- a/nixos/tests/systemd-confinement.nix
+++ b/nixos/tests/systemd-confinement.nix
@@ -59,7 +59,8 @@ import ./make-test-python.nix {
                   "chroot-exec chown 65534 /bin",
               )
               machine.succeed(
-                  'test "$(chroot-exec id -u)" = 0', "chroot-exec chown 0 /bin",
+                  'test "$(chroot-exec id -u)" = 0',
+                  "chroot-exec chown 0 /bin",
               )
         '';
       }