diff --git a/nixos/tests/nixos-rebuild-install-bootloader.nix b/nixos/tests/nixos-rebuild-install-bootloader.nix
index 1e517871e7d1..64d978119d57 100644
--- a/nixos/tests/nixos-rebuild-install-bootloader.nix
+++ b/nixos/tests/nixos-rebuild-install-bootloader.nix
@@ -71,5 +71,8 @@ import ./make-test-python.nix ({ pkgs, lib, withNg ? false, ... }: {
           # at this point we've tested regression #262724, but haven't tested the bootloader itself
           # TODO: figure out how to how to tell the test driver to start the bootloader instead of
           # booting into the kernel directly.
+
+      with subtest("New boot entry has been added"):
+          machine.succeed("test -f /boot/loader/entries/nixos-generation-2.conf")
     '';
 })