diff --git a/mm/damon/sysfs-test.h b/mm/damon/sysfs-test.h
index 1c9b596057a7..7b5c7b307da9 100644
--- a/mm/damon/sysfs-test.h
+++ b/mm/damon/sysfs-test.h
@@ -67,6 +67,7 @@ static void damon_sysfs_test_add_targets(struct kunit *test)
 	damon_destroy_ctx(ctx);
 	kfree(sysfs_targets->targets_arr);
 	kfree(sysfs_targets);
+	kfree(sysfs_target->regions);
 	kfree(sysfs_target);
 }