diff --git a/[refs] b/[refs]
index 63123aaeeb08..23d16817bf6c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9ba025f10885758975fbbc2292a5b9e7cb8026a8
+refs/heads/master: 524223ca8142d593124bde66f3ffa1deb6f56c06
diff --git a/trunk/kernel/ptrace.c b/trunk/kernel/ptrace.c
index 86a7f6c60cb2..0eeb7e66722c 100644
--- a/trunk/kernel/ptrace.c
+++ b/trunk/kernel/ptrace.c
@@ -30,8 +30,7 @@
  */
 void __ptrace_link(task_t *child, task_t *new_parent)
 {
-	if (!list_empty(&child->ptrace_list))
-		BUG();
+	BUG_ON(!list_empty(&child->ptrace_list));
 	if (child->parent == new_parent)
 		return;
 	list_add(&child->ptrace_list, &child->parent->ptrace_children);