diff --git a/lib/roken/roken.h.in b/lib/roken/roken.h.in
index 568ea410b..85f93fe62 100644
--- a/lib/roken/roken.h.in
+++ b/lib/roken/roken.h.in
@@ -92,6 +92,9 @@ struct sockaddr_dl;
 #ifdef HAVE_NETDB_H
 #include <netdb.h>
 #endif
+#ifdef HAVE_ARPA_NAMESER_H
+#include <arpa/nameser.h>
+#endif
 #ifdef HAVE_RESOLV_H
 #include <resolv.h>
 #endif