diff --git a/core/net/rpl/rpl-dag.c b/core/net/rpl/rpl-dag.c
index f7d37a6e5..ab1f8e002 100644
--- a/core/net/rpl/rpl-dag.c
+++ b/core/net/rpl/rpl-dag.c
@@ -78,10 +78,16 @@ NBR_TABLE(rpl_parent_t, rpl_parents);
 rpl_instance_t instance_table[RPL_MAX_INSTANCES];
 rpl_instance_t *default_instance;
 /*---------------------------------------------------------------------------*/
+static void
+nbr_callback(void *ptr)
+{
+  rpl_remove_parent(ptr);
+}
+
 void
 rpl_dag_init(void)
 {
-  nbr_table_register(rpl_parents, (nbr_table_callback *)rpl_remove_parent);
+  nbr_table_register(rpl_parents, (nbr_table_callback *)nbr_callback);
 }
 /*---------------------------------------------------------------------------*/
 rpl_rank_t