From 1c560fb9dbd54eeb090a02b36aa6a4eac39c264b Mon Sep 17 00:00:00 2001
From: Nicolas Tsiftes <nvt@sics.se>
Date: Tue, 18 Mar 2014 08:11:34 +0100
Subject: [PATCH] The check should be whether RPL_DIS_SEND is non-zero, not
 whether it is defined.

---
 core/net/rpl/rpl-timers.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/net/rpl/rpl-timers.c b/core/net/rpl/rpl-timers.c
index b4c25df19..d2ff5c97f 100644
--- a/core/net/rpl/rpl-timers.c
+++ b/core/net/rpl/rpl-timers.c
@@ -70,7 +70,7 @@ handle_periodic_timer(void *ptr)
   rpl_recalculate_ranks();
 
   /* handle DIS */
-#ifdef RPL_DIS_SEND
+#if RPL_DIS_SEND
   next_dis++;
   if(rpl_get_any_dag() == NULL && next_dis >= RPL_DIS_INTERVAL) {
     next_dis = 0;