diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index e0121fe6b6b8..b49be62b24b7 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -556,6 +556,7 @@ in {
   systemd-initrd-btrfs-raid = handleTest ./systemd-initrd-btrfs-raid.nix {};
   systemd-initrd-luks-keyfile = handleTest ./systemd-initrd-luks-keyfile.nix {};
   systemd-initrd-luks-password = handleTest ./systemd-initrd-luks-password.nix {};
+  systemd-initrd-modprobe = handleTest ./systemd-initrd-modprobe.nix {};
   systemd-initrd-shutdown = handleTest ./systemd-shutdown.nix { systemdStage1 = true; };
   systemd-initrd-simple = handleTest ./systemd-initrd-simple.nix {};
   systemd-initrd-swraid = handleTest ./systemd-initrd-swraid.nix {};
diff --git a/nixos/tests/systemd-initrd-modprobe.nix b/nixos/tests/systemd-initrd-modprobe.nix
new file mode 100644
index 000000000000..bf635a10d0e9
--- /dev/null
+++ b/nixos/tests/systemd-initrd-modprobe.nix
@@ -0,0 +1,17 @@
+import ./make-test-python.nix ({ lib, pkgs, ... }: {
+  name = "systemd-initrd-modprobe";
+
+  nodes.machine = { pkgs, ... }: {
+    boot.initrd.systemd.enable = true;
+    boot.initrd.kernelModules = [ "loop" ]; # Load module in initrd.
+    boot.extraModprobeConfig = ''
+      options loop max_loop=42
+    '';
+  };
+
+  testScript = ''
+    machine.wait_for_unit("multi-user.target")
+    max_loop = machine.succeed("cat /sys/module/loop/parameters/max_loop")
+    assert int(max_loop) == 42, "Parameter should be respected for initrd kernel modules"
+  '';
+})