diff --git a/include/linux/sched.h b/include/linux/sched.h
index 39acee2..b38ed51 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2284,8 +2284,10 @@
 	return tsk->signal->nr_threads;
 }
 
-/* de_thread depends on thread_group_leader not being a pid based check */
-#define thread_group_leader(p)	(p == p->group_leader)
+static inline bool thread_group_leader(struct task_struct *p)
+{
+	return p->exit_signal >= 0;
+}
 
 /* Do to the insanities of de_thread it is possible for a process
  * to have the pid of the thread group leader without actually being