diff --git a/src/include/list.h b/src/include/list.h
index ca8a520fb7..394487831c 100644
--- a/src/include/list.h
+++ b/src/include/list.h
@@ -4,8 +4,6 @@
 #ifndef __LIST_H__
 #define __LIST_H__
 
-#include <stddef.h>
-
 struct list_node {
 	struct list_node *next;
 	struct list_node *prev;
diff --git a/src/include/thread.h b/src/include/thread.h
index df307fa6f8..a2c7ed2085 100644
--- a/src/include/thread.h
+++ b/src/include/thread.h
@@ -2,7 +2,6 @@
 #ifndef THREAD_H_
 #define THREAD_H_
 
-#include <stddef.h>
 #include <stdint.h>
 #include <bootstate.h>
 #include <arch/cpu.h>