diff --git a/src/config.h.in b/src/config.h.in
index 5658fcdcf5d79607707a8d8ac8bf1e1e6453e164..64794645ed124b90998b6bf71c9f523d153503f4 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -20,5 +20,8 @@
 /* Define if you have the <sys/utime.h> header file */
 #undef HAVE_SYS_UTIME_H
 
+/* Define if you have the <sys/types.h> header file */
+#undef HAVE_SYS_TYPES_H
+
 /* Define if you have the <sys/select.h> header file */
 #undef HAVE_SYS_SELECT_H