diff --git a/core/lib/trickle-timer.c b/core/lib/trickle-timer.c
index 1297fdb4d..97a620767 100644
--- a/core/lib/trickle-timer.c
+++ b/core/lib/trickle-timer.c
@@ -276,7 +276,9 @@ fire(void *ptr)
     loctt->cb(loctt->cb_arg, TRICKLE_TIMER_PROTO_TX_ALLOW(loctt));
   }
 
-  schedule_for_end(loctt);
+  if(trickle_timer_is_running(loctt)) {
+    schedule_for_end(loctt);
+  }
 }
 /*---------------------------------------------------------------------------*/
 /* New trickle interval, either due to a newly set trickle timer or due to an