diff --git a/src/headers/linked_list.h b/src/headers/linked_list.h
index 88f3a3e..c3a3315 100644
--- a/src/headers/linked_list.h
+++ b/src/headers/linked_list.h
@@ -1,9 +1,10 @@
 #ifndef LINKED_LIST_H
 #define LINKED_LIST_H
 
-#include <stdint.h>
 #include <stdbool.h>
 #include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
 
 /**
  * @brief Element struct for linked lists.