diff --git a/sftp_server/protocol.c b/sftp_server/protocol.c
index f69795c9..31eaf803 100644
--- a/sftp_server/protocol.c
+++ b/sftp_server/protocol.c
@@ -29,8 +29,10 @@ MA 02111-1307, USA. */
 #include <netdb.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/param.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include "server.h"
 
 #define TYPE_DIR 1