diff --git a/core/net/rpl/rpl-conf.h b/core/net/rpl/rpl-conf.h
index 39379ba8c..693272b13 100644
--- a/core/net/rpl/rpl-conf.h
+++ b/core/net/rpl/rpl-conf.h
@@ -38,6 +38,8 @@
 #ifndef RPL_CONF_H
 #define RPL_CONF_H
 
+#include "contiki-conf.h"
+
 /* Set to 1 to enable RPL statistics */
 #ifndef RPL_CONF_STATS
 #define RPL_CONF_STATS 0