--- libnfsidmap-0.25.orig/cfg.h
+++ libnfsidmap-0.25/cfg.h
@@ -33,6 +33,7 @@
 #ifndef _CONF_H_
 #define _CONF_H_
 
+#include <sys/types.h>
 #include "queue.h"
 
 struct conf_list_node {