diff --git a/include/sys/queue.h b/include/sys/queue.h
index 3d28a6c..cee256d 100644
--- a/include/sys/queue.h
+++ b/include/sys/queue.h
@@ -35,8 +35,6 @@
 #ifndef _SYS_QUEUE_H_
 #define	_SYS_QUEUE_H_
 
-#include <sys/cdefs.h>
-
 /*
  * This file defines four types of data structures: singly-linked lists,
  * singly-linked tail queues, lists and tail queues.