1 files changed, 1 insertions, 1 deletions

diff --git a/src/dht/gnunet-service-xdht_routing.c b/src/dht/gnunet-service-xdht_routing.c
index 7bf96e9d0..a78e73937 100644
--- a/src/dht/gnunet-service-xdht_routing.c
+++ b/src/dht/gnunet-service-xdht_routing.c
@@ -119,7 +119,7 @@ get_next_hop (struct RoutingTrail *trail,
 int
 GDS_ROUTING_trail_update (struct GNUNET_PeerIdentity *source_peer,
                           struct GNUNET_PeerIdentity *destination_peer,
-                          struct GNUNET_PeerIdentity *prev_hop)
+                          const struct GNUNET_PeerIdentity *prev_hop)
 {
   /* 1. find the trail corresponding to these values. 
    2. update the prev hop to source peer. */