--- a/lib/asn1/oid.h	2017-03-24 16:04:44.603350102 +0200
+++ b/lib/asn1/oid.h	2017-03-24 19:58:30.876866547 +0200
@@ -8,6 +8,8 @@
 #ifndef OID_H_
 #define OID_H_
 
+#include <sys/types.h>
+
 typedef struct {
     u_char octet;
     u_int  next;