diff --git a/nixos/tests/boot-stage1.nix b/nixos/tests/boot-stage1.nix
index ce86fc5f494d..756decd2039d 100644
--- a/nixos/tests/boot-stage1.nix
+++ b/nixos/tests/boot-stage1.nix
@@ -33,6 +33,8 @@ import ./make-test-python.nix ({ pkgs, ... }: {
         #include <linux/sched/signal.h>
         #endif
 
+        MODULE_LICENSE("GPL");
+
         struct task_struct *canaryTask;
 
         static int kcanary(void *nothing)