diff --git a/osfmk/duct/duct_kern_thread.c b/osfmk/duct/duct_kern_thread.c
index d1d5111..fd99429 100644
--- a/osfmk/duct/duct_kern_thread.c
+++ b/osfmk/duct/duct_kern_thread.c
@@ -506,6 +506,8 @@ static void thread_deallocate_complete(thread_t thread)
 	queue_remove(&task->threads, thread, thread_t, task_threads);
 	task->thread_count--;
 
+	task_unlock(task);
+
 	task_deallocate(task);
 
 	if (thread->linux_task != NULL)